Philip P. Ide

Author, programmer, science enthusiast, half-wit.
Life is sweet. Have you tasted it lately?

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  • Blog
    • Aardvaark
      • Perseverance Rover
        • 7 Minutes of Terrorplugin-autotooltip__default plugin-autotooltip_big7 Minutes of Terror

          [7 mins of terror]It takes seven minutes for a vehicles to descend through the Martian atmosphere to the surface. The distance between Earth and Mars is always greater than seven light minutes when these landings take place, so by the time Earth gets the message that the vehicles has made contact with the atmosphere, it is already on the ground. Hopefully in one piece.
        • Mission Statusplugin-autotooltip__default plugin-autotooltip_bigMission Status

          Perserverance has now landed successfully, and the clock is now counting mission time.

          Watch this page for updated information as we move beyond landing

          The rover landed about a kilometre off-centre of its landing zone, and about 2km from the base of the cliffs at the edge of the silt fan (part of the influx delta complex).
      • Contactplugin-autotooltip__default plugin-autotooltip_bigContact

        If you have a burning desire to contact me, use the discussion form below. Anything you say remains private between you and me.
      • Cookie Policy & GDPRplugin-autotooltip__default plugin-autotooltip_bigCookie Policy & GDPR

        There are NO tracking cookies on this site!

        The Cookie policy is straightforward. This site only uses cookies that are required to make your experience of using this site better, and only uses session cookies (see exceptions below). Session cookies are deleted when you close your browser.
      • Downloadsplugin-autotooltip__default plugin-autotooltip_bigDownloads

        Orbital Calculator Current Version This is a portable application, meaning there is no installer. Just unzip into a folder and run the executable. Since it is portable, it can be run from a USB stick.

        A full description and a list of the features are available
      • International Space Stationplugin-autotooltip__default plugin-autotooltip_bigInternational Space Station

        This page has a portal through which you can view the current location of the International Space Station, updating in real-time. The tracker itself comes from the European Space Agency (ESA).

        Part of the tool doesn't seem to be working properly yet, raising an error when the widget first loads. A possible explanation for the error is detailed below. There is also a handy link to get email notifications direct from NASA when the ISS is visible in your night sky.
      • Mars Mission Locatorplugin-autotooltip__default plugin-autotooltip_bigMars Mission Locator

        [Mars Missions] The location of all the missions that have gone to Mars can be confusing when you don't know where they went. Many missions never made it to the surface successfully, or had a malfunction that prevented them from working properly. Some of the landers introduced themselves to the surface with a little too much vigour. Others sailed on past Mars never to be seen again.
      • Mars Weather Reportsplugin-autotooltip__default plugin-autotooltip_bigMars Weather Reports

        These reports are provided by NASA's InSight lander in the south-west corner of Elysium Planitia. Daily readings are usually a couple of days behind reality.

        This page is updated as new data is detected.

        Last update: 00:35 Sat. May 8th, 2021 BST
      • NASA Image of the Dayplugin-autotooltip__default plugin-autotooltip_bigNASA Image of the Day

        Date: Sat 25th September, 2021

        Title: The Bubble and the Star Cluster

        To the eye, this cosmic composition nicely balances the Bubble Nebula at the right with open star cluster M52. The pair would be lopsided on other scales, though. Embedded in a complex of interstellar dust and gas and blown by the winds from a single, massive O-type star, the Bubble Nebula, also known as NGC 7635, is a mere 10 light-years wide.
      • Near Earth Objectsplugin-autotooltip__default plugin-autotooltip_bigNear Earth Objects

        (c)www.astroart.org The following data is reproduced from the NASA NEO (Near Earth Object) database, and is updated daily. Each record represents an object such as an asteroid or comet, and notes the date and approximate time the object is closest to the Earth as it passes by. The data is refreshed daily covering the period displayed on this page.
      • Perseverance Roverplugin-autotooltip__default plugin-autotooltip_bigPerseverance Rover

        Perseverance has launched succesfully and the clock is now counting flight and ETA time. It is due to land on Mars on (times and countdown timer based on NASA's timer):

        * Feb 18th 2021. * * * * * * *
      • Rules on Reviewingplugin-autotooltip__default plugin-autotooltip_bigRules on Reviewing

        First off, you should know I only have a limited amount of time, so I can't review a hundred novels at once. Sorry, but that's basic physics for you. If I agree to review your novel, you may have to wait a while for me to get around to it, and then I'll need time to read it. I only review hard copies.
    • Articles
      • General
        • A Keen Interest In Marsplugin-autotooltip__default plugin-autotooltip_bigA Keen Interest In Mars

          [MOLA globe of Mars]You may have noticed from pages such as the Mars Weather Report page, that I have a keen interest in Mars, Martian weather, and the InSight lander.

          Mars itself, and the incredible science we are doing there is of course a fascination in and of itself. However, my interest goes deeper than that. My latest novel (at the time this article was written - March 2019) is about the exploration of Mars. NASA have provided a wealth of data and information for …
        • A New Siteplugin-autotooltip__default plugin-autotooltip_bigA New Site

          Yup, the old site was as ugly as sin and to find a blog entry you had to scroll through the feed or take your chances with the search option.

          This new site is just as easy to maintain, has extensive search capabilities, and both orders and structures the entries. Not only does this make it easier for you to find stuff, it encourages you to browse around. It's not as ugly either.
        • Astronomer's Nightmareplugin-autotooltip__default plugin-autotooltip_bigAstronomer's Nightmare

          Satellites offer such huge benefits, including communications, taking the internet where it wouldn't otherwise be feasible, monitoring our weather and sea-level changes, GPS etc. etc. We shouldn't forget spying (um, military intelligence) either, because despite its sordid nature, it is important. At least, some people think so.
        • Getting To Marsplugin-autotooltip__default plugin-autotooltip_bigGetting To Mars

          [Mars] Edit: updated to include

          There are multiple ways to get to Mars, and each has pros and cons. The one thing they all have in common is orbital mechanics. Some options can get to Mars in a short period of time, while others could take up to a year. Some are better suited for robotic missions, others for crewed missions. This article takes a look at the problems of getting to Mars (and getting back) and what options are available.
        • How do I Calculate Distance from Period?plugin-autotooltip__default plugin-autotooltip_bigHow do I Calculate Distance from Period?

          I've been asked how Orbital Calculator can calculate the distance an object is from a gravitational mass, using just its period (the time it takes to complete an orbit). The technique is relatively simple, so I'll explain it.
        • NASA Boarding Passplugin-autotooltip__default plugin-autotooltip_bigNASA Boarding Pass

          I took the plunge and got my NASA boarding pass for the Mars 2020 Rover mission.

          [NASA Boarding pass for Mars 2020 Mission]

          Get yours here: NASA Website SEND YOUR NAME TO MARS
        • NASA Receives 2 Emmy Awardsplugin-autotooltip__default plugin-autotooltip_bigNASA Receives 2 Emmy Awards

          NASA recently won (14th-15th Sept 2019) two Emmy's for interactive content. Aside from the obvious achievements of winning the awards, there is something else going on here that should be recognised and encouraged. Awards, of course, are intended to recognise, encourage and promote excellence, but I'm talking about NASA not only reaching out to the public, but interactively engaging them.
        • Orbital Calculator v1.0.0.5 Updateplugin-autotooltip__default plugin-autotooltip_bigOrbital Calculator v1.0.0.5 Update

          You can now calculate distance from a gravitational mass using the orbital period. The image above shows a calculation for Mars which has a 687 day year.

          I've allowed the use of tokens to identify time components to make it easy to use. The examples shown in the image should explain how it works.
        • Orbital Shenanigansplugin-autotooltip__default plugin-autotooltip_bigOrbital Shenanigans

          [MOLA map of Mars coloured by elevation]

          Edited: 2019-03-14

          Sometimes when you do some research – actually, quite often – you find out some really interesting stuff and end up changing your mind. In my story, I had some people on the ground on Mars, and wanted a spacecraft in a geostationary orbit above them to give them communications between them at all times. Just for info, when talking about geostationary orbits, the accepted term for Mars is aerostationary. I’ll use g…
      • Info Posts
        • Adjustment to Mars Clocksplugin-autotooltip__default plugin-autotooltip_bigAdjustment to Mars Clocks

          [Martian clock showing time at the prime meridian] The Martian clocks (keeping Martian time) on the Mars Weather page also display the L (pron. ell sub ess) - a way of describing where the planet is in its orbit, and the displacement of the sun in the sky at midday. I noticed the value for this was out by some distance, and after pondering the problem (and the code) for a while, the penny dropped.
        • Another Dayplugin-autotooltip__default plugin-autotooltip_bigAnother Day

          A busy day today. I had an interview for a job today, so fingers crossed. Orbital Calculator got some attention too: I added the ability to have escape velocities output in km, metres or miles (per second) in the Gravity and Motion calculations - previously, output was just in km/s. I've tested and compiled and tested again, and I'll zip up the various releases and upload them to this site tomorrow (actually, later today - it's nearly 3am!).
        • Automatic Weather Updatesplugin-autotooltip__default plugin-autotooltip_bigAutomatic Weather Updates

          The Mars Weather page is now 99.99% automatic, with rebuilds regularly throughout the day. The 0.001% that's not automated? Once a week I have to update the image that shows the relative positions of the inner planets. I think I can manage that
        • Hogfather Update 2plugin-autotooltip__default plugin-autotooltip_bigHogfather Update 2

          The Website will be down for a short period Sun, Aug 2nd 2020 while the site is upgraded

          I shall be taking the site down for a while on Sun, Aug 2nd 2020, while i perform the upgrade. Although I have a local copy of the website, I also do a bit of experimentation on it, so the two are not perfectly synchronised, so I'll have to make a backup of the site and download it first. It'll actually take longer to do that than perform the update. It should all be over in less than tw…
        • Info Reportplugin-autotooltip__default plugin-autotooltip_bigInfo Report

          N.B. This page gets bumped every now and again when new info is added.

          I've been pruning some of the stale articles and blog posts. If anything is broken, please let me know.
        • Mars July 2020plugin-autotooltip__default plugin-autotooltip_bigMars July 2020

          It's mid-July now, and temperatures at the InSight lander's location on Mars (south-west corner of Elysium in the northern hemisphere) are teetering on the edge and about to fall. At the end of the month - July 30th - NASA's Perseverance rover (formerly known as the Mars 2020 rover) gets its first launch opportunity. It had previously been scheduled to launch two weeks earlier but, you know, things happened.
        • Mars Solar Conjunctionplugin-autotooltip__default plugin-autotooltip_bigMars Solar Conjunction

          This page is currently inactive for 2019 conjunction (until next conjunction in 2021)

          Mars is heading for a solar conjunction, which in layman's terms means it's on the opposite side of the sun from the Earth. For a short period, no commands will be sent to the Mars spacecraft (which includes landers and rovers) since the sun's corona could corrupt those commands and result in unintended actions, disablement of the spacecraft or worse.
        • Mars Weather Data Flows Againplugin-autotooltip__default plugin-autotooltip_bigMars Weather Data Flows Again

          It appears that after a long hiatus, Mars Weather data is flowing again.
        • Mars Weather Page Updateplugin-autotooltip__default plugin-autotooltip_bigMars Weather Page Update

          [Temperature over time] I've updated the format of the Temperature Over Time chart on the Mars Weather page to make it more readable. The sol numbers were overlapping each other, despite being broken into two rows. The chart is now interactive, in that you can use your mouse (or other pointing device) to select a position on one of the temperature graphs, and the sol number will be displayed at the bottom.
        • News 11th Feb 2021plugin-autotooltip__default plugin-autotooltip_bigNews 11th Feb 2021

          My internet connection has now been established in my new home, and the Raspberry Pi's are working their hearts out to update the pages containing NASA data. There is a brief period that Mars Weather data is temporarily lost (I assume I'll be able to recover it when the data is next uploaded to the PDS repository in about 6 months time).
        • News 15th Jan 2021plugin-autotooltip__default plugin-autotooltip_bigNews 15th Jan 2021

          Mars

          As the Perseverance Rover approaches Mars, NASA mysteriously remove the countdown clock to the landing. Fear not, the countdown clocks on this site are still working: Perseverance Rover. Note that after the landing, the page will reflect the current mission time and other data made available.
        • Orbital Calculator 2.0.7 Releasedplugin-autotooltip__default plugin-autotooltip_bigOrbital Calculator 2.0.7 Released

          This is a maintenance update. see Release Notes for details.
        • Orbital Calculator v2.0.6 Releasedplugin-autotooltip__default plugin-autotooltip_bigOrbital Calculator v2.0.6 Released

          [Orbital Calculator v2.0.6] Four major new functions for acceleration and gravity and a few tweaks under the hood. New functions include: Constant Velocity, Free-Fall, N-Body Centre of Gravity (in 3D space) and Distance/Speed/Time.

          These powerful functions allow you to calculate speed as a constant, as constant acceleration or as increasing acceleration, as well as determine the common centre of gravity of any number of astronomical or artificial space-born o…
        • Pi Zero Planplugin-autotooltip__default plugin-autotooltip_bigPi Zero Plan

          I've been wondering what to do with my Raspberry Pi Zero, and didn't think I'd come up with an idea for a few months. Like most things, it's not necessarily a good idea to go looking for a use for it: wait until a use suggests itself.
        • Raw Weather Dataplugin-autotooltip__default plugin-autotooltip_bigRaw Weather Data

          I have (at last) managed to get hold of all the Mars Weather data that's been missing from my dataset. In fact, I've got hold of so much (over 110Gb) that it's going to take some processing - it bears little resemblance to the data I currently fetch. I need a plan.
        • Scatter Graphplugin-autotooltip__default plugin-autotooltip_bigScatter Graph

          I've added a scatter graph to the Near Earth Object page, to show when objects are at closest approach and at what distance.
        • Site Softwareplugin-autotooltip__default plugin-autotooltip_bigSite Software

          Some people have expressed an interest in what software I use for this site. It's built around DokuWiki with some extensions to make it work like a blog, keep it transparent (all the articles and entries are visible in the treeview menu) and to spruce things up - such as the auto-tooltip which displays the first part of a page when the user mouses over an internal link (this also works in the top-bar menu). Some extensions make administering the site easier, such as moving articl…
        • Site Statisticsplugin-autotooltip__default plugin-autotooltip_bigSite Statistics

          For the last year I've been using a plugin for my site that generates a statistics page, through which I can keep an eye on how well the site is doing. A couple of days ago, it stopped working. After a bit of analysis I discovered the data structures it was creating in memory had consumed too much of said memory and my hosting service had auto-assassinated it.
        • Updatesplugin-autotooltip__default plugin-autotooltip_bigUpdates

          The physical Martian clock... I have to come up with a better name for it than that. PiMars! Yup, I like that. The PiMars clock was up and running and displaying data at a crucial time. It was just a couple of hours before the end of the day at the InSight location, and as luck would have it, I had it display time at that place.
        • Weather Page Updateplugin-autotooltip__default plugin-autotooltip_bigWeather Page Update

          Mon Aug 10, 2020

          I've made some updates to the Mars Weather page.

          * Bugfix to Wind direction chart to correctly show most common wind direction and sample count * Smoothed the max/min data lines in the Temperature over Time chart so anomolies don't distort the location of the lines
      • Raspberry Pi
        • Physical Mars Clock
          • Pi-Mars Installationplugin-autotooltip__default plugin-autotooltip_bigPi-Mars Installation

            You require an RPIv2 or later (to use the SmartiPi Touch 2 case, you require an RPI4). It will not run on an RPI1 or an RPI-Zero. This installation and configuration guide assumes you have installed an operating system on your Pi and can login either directly (with a keyboard/monitor attached to the Pi) or indirectly through SSH or VNC across a network.
          • Pi-Mars v1.1plugin-autotooltip__default plugin-autotooltip_bigPi-Mars v1.1

            Pi-Mars is a clock for the Raspberry Pi, that tells the time anywhere on Mars. It has options to nominate ad-hoc locations, pre-selected locations and sites of the various missions that made it to the Martian surface. It is skinnable and highly configurable.
      • Science
        • NASA Technology Review 2019
          • SmartSuitplugin-autotooltip__default plugin-autotooltip_bigSmartSuit

            SmartSuit: A Hybrid, Intelligent, and Highly Mobile EVA Spacesuit for Next Generation Exploration Missions

            Developer: Texas A&M Engineering Experiment Station

            I think the title says it all, but just in case it wasn't crystal clear, this is what they have to say about it:
          • THE MOST Space Telescopeplugin-autotooltip__default plugin-autotooltip_bigTHE MOST Space Telescope

            [Disambiguation: this page is about The High Étendue Multiple Object Spectrographic Telescope, not Canada's MOST space telescope]

            Few telescopes can honestly say they've reinvented the concept, yet THE MOST certainly has. It works on a surprisingly old principle, by passing light through two prisms. As Isaac Newton demonstrated, this first splits light into its constituent components, then recombines it back again.
        • Dragonfly to Explore Titanplugin-autotooltip__default plugin-autotooltip_bigDragonfly to Explore Titan

          Credits: NASA/JHU-APL Few worlds excite exoplanetary chemists like Titan, Saturn's enigmatic and largest moon. It is the second-largest moon in the solar system, and the only one known to have a dense atmosphere. As such, it is seen as an analogue to the early Earth, and therefore important in understanding how life might have evolved on our homeworld.
        • How Big Is The Universe?plugin-autotooltip__default plugin-autotooltip_bigHow Big Is The Universe?

          [Hubble deep Field Image]

          I recently came across a youtube video explaining a method for multiplication that was quite different from long multiplication. To explain why this was so interesting, let’s first talk about long multiplication and what’s wrong with it, and then we'll calculate the size of the visible universe in centimeters.
        • Landing the Mars 2020 Rover Safelyplugin-autotooltip__default plugin-autotooltip_bigLanding the Mars 2020 Rover Safely

          Autonomous landings are always fraught with danger. One of the most dangerous terrains any landing might occur on is a boulder field. Not only would the impact of the landing on these hard objects be a threat, but the boulders are likely to be jagged too. Another threat are the steep cliffs of the crater - not falling off them (although that's a possibility), but crashing into them.
        • Magnetic Field Lines on a Galactic Scaleplugin-autotooltip__default plugin-autotooltip_bigMagnetic Field Lines on a Galactic Scale

          [Powerful magnetic fields are visible]

          The Cigar galaxy (M82) is already famous for the speed at which it creates new stars. The composite image shows the powerful magnetic field lines on a truly epic scale, wrapping around the entire galaxy. NASA's SOFIA observatory (Stratospheric Observatory for Infrared Astronomy - a converted Boeing 747) has shed light on what is happening.
        • Mysterious Starplugin-autotooltip__default plugin-autotooltip_bigMysterious Star

          Back in 2016, Tabetha Boyajian gave a TED talk about a star with nifty little name KIC 8462852. The Kepler space telescope had studied it and lots of other stars over the course of four years, but this one stood out.

          Also known as Tabby's Star, it is a main-sequence F-type star located in the constellation Cygnus, about 1,480 light-years from Earth. Its claim to fame of course, is that it was suggested that alien megastructures would explain the weird data that Kepler had recor…
        • NASA Got it Wrong - Oops!plugin-autotooltip__default plugin-autotooltip_bigNASA Got it Wrong - Oops!

          It's not every day you get the chance to tell NASA they screwed up.

          I was reviewing the data I'd collected from NASA's Mars Weather page, and I noticed that the graphs they generated didn't match the summary data.

          For example, the summary data for Sol 169 shows the maximum temperature peaking at -17.6°C, while the graph for the same day showed the temperature never rising above -25°C.
        • To the Moon and Marsplugin-autotooltip__default plugin-autotooltip_bigTo the Moon and Mars

          [The Moon - watch out, here we come (again)!]NASA has outlined an aggressive timetable for an equally aggressive return to the Moon, with a view to making the Moon a waystation for trips to Mars. This requires the development of a whole slew of new technologies, as well as ramping up existing technologies and capabilities to whole new levels.
      • Software
        • Calculate your Age and Weight on the Planetsplugin-autotooltip__default plugin-autotooltip_bigCalculate your Age and Weight on the Planets

          This little calculator allows you to calculate how old you would be on each of the planets in the solar system, and what your weight would be. If you have weight issues, don't look at the result for Jupiter!
        • DLCounter Pluginplugin-autotooltip__default plugin-autotooltip_bigDLCounter Plugin

          [screenshot]

          This download-counter plugin for DokuWiki enables you to keep track of the number of downloads of media files such as zip, gzip, tarballs and pdf's (your choice of media formats). This plugin has been developed and tested on “Greebo
        • DLCounter Plugin Bugtrackerplugin-autotooltip__default plugin-autotooltip_bigDLCounter Plugin Bugtracker

          If you have any issues with the plugin, leave a comment here.
        • Orbital Calculatorplugin-autotooltip__default plugin-autotooltip_bigOrbital Calculator

          I needed to calculate orbital characteristics for any orbit around any gravitational mass (because I write sci-fi stories), so I wrote this program because I'm a programmer and I'm too lazy to do it by hand all the time. The program has expanded over the last few years, sometimes from suggestions by other writers. I make it freely available and as simple to use as possible. It now has a list of functions as long as your arm (assuming you're not a tentacle user), and the numbe…
        • Orbital Calculator v2.x Release Notesplugin-autotooltip__default plugin-autotooltip_bigOrbital Calculator v2.x Release Notes

          This lists the important notes on each new release, explaining what has changed and what's new.

          See the Downloads page to download Orbital Calculator for various platforms. A full description of the product is available on the
        • Surface Gravity Calculatorplugin-autotooltip__default plugin-autotooltip_bigSurface Gravity Calculator

          Want to know what the surface gravity is on any celestial object? You just need to know it's mass in terms of Earth masses (e.g. Earth = 1, Venus = 0.815, Mars = 0.107 etc.) and it's radius. This calculator will do the rest.
    • Articles on Writing
      • Animal Farmplugin-autotooltip__default plugin-autotooltip_bigAnimal Farm

        As a writer, I love sitting at my computer and either writing my next novel, or working on the development phase - world-building, character creation, plot development etc. However, after 12 hours sitting at my desk I'm getting a bit uncomfortable and if I listen very carefully, I can hear the sofa's siren call
      • Animal Farm Part 2plugin-autotooltip__default plugin-autotooltip_bigAnimal Farm Part 2

        In an earlier article I explained why using a wiki farm could be productive for someone who is on the move or likes to preserve previous versions of documents, and also for someone like me who uses multiple operating systems.

        It's worth noting too that collaborating becomes a lot easier using a wiki, and since the platform preserves old versions of each document, it provides a safety net too. That aside, I thought I'd share how this all works for the user.
      • Description or Teaser?plugin-autotooltip__default plugin-autotooltip_bigDescription or Teaser?

        When you write the blurb that goes on the back of the book, should you write a description or a teaser? This article explores that question, explaining why each of them work and what their effects are, and why sometimes one is a better choice than the other.
      • Oh, The Facts!plugin-autotooltip__default plugin-autotooltip_bigOh, The Facts!

        [Only the facts, ma'am]There was a litany that writers used to be told, but is rarely heard these days. If you've been a writer for more than ten years you will probably recall it: “Stick to the facts!”. Does that mean your story ends up a dry, soulless, sequential list of equally dry, soulless facts? Of course not.
      • Proper Paragraph Spacing and Indenting on Web Pagesplugin-autotooltip__default plugin-autotooltip_bigProper Paragraph Spacing and Indenting on Web Pages

        This is a short article on how to setup the correct CSS in order to replicate the paragraph spacing and indenting displayed in a book on your web pages. It will also enlarge and embolden the first character in the scene.
      • Self-Publishing Trapsplugin-autotooltip__default plugin-autotooltip_bigSelf-Publishing Traps

        Sometimes it's a while before I post a new book review. Usually this is because I've read some self-published novels that I don't want to review. When I post a review, I'm telling readers about a book I'd recommend. This is good for readers, and it's good for the authors who get the recommendation. I'm not out to harm someone's writing career - which can always be turned around in the future - and I'm certainly not the sort of pompous umm, donkey, that simply lets my mouth…
      • Smart but Dumb Aliensplugin-autotooltip__default plugin-autotooltip_bigSmart but Dumb Aliens

        We all know the problem, especially from video games and movies, where the super-smart aliens turn out to be really dumb. This is usually because the creator hasn't put much thought into it.

        So, you're creating a super-intelligent alien or species or civilisation for your short story or novel or whatever. How do you avoid the pitfalls of dumbing them down?
      • Story Structure (Hero's Journey)plugin-autotooltip__default plugin-autotooltip_bigStory Structure (Hero's Journey)

        The Hero's Journey is an overlay for the 4-part story structure. See how they work in conjunction with the character arc.

        ----------

        Click on this image to review it, then click it again to see it full size

        Other Structures
      • The Climaxplugin-autotooltip__default plugin-autotooltip_bigThe Climax

        Whether you work out what happens at the end of your story before you start writing, or discover what happens when you write the climactic scene, understanding why the scene is so important to the protagonist's story is critical to getting it right.
      • The Prophecyplugin-autotooltip__default plugin-autotooltip_bigThe Prophecy

        [Myrddin]Prophecy is a common theme in fantasy, partly because it tugs on the strings that are entangled with mythos - somehow it just excites us - and partly because it is a huge convenience. Never underestimate the power of a single word. In all of writing, there are few words that are as powerful as
      • Voices in the Darkplugin-autotooltip__default plugin-autotooltip_bigVoices in the Dark

        A scene that is all dialogue and no action creates the dreaded “voices in the dark”. Perhaps they're at a conference table, or standing around talking things through before making a decision that will propel the story into its next phase.
    • Book Reviews
      • Fantasy
        • Casey White
          • Silvertongueplugin-autotooltip__default plugin-autotooltip_bigSilvertongue

            [Silvertongue]

            Silvertongue is the first in a series named “Remnants of Magic”, and both the title of the novel and the series become readily apparent in the first scene. Speaking of the first scene, it's a big one at 100 pages spanning eleven chapters, but don't let that put you off - it's one hell of a scene. The story kicks you straight into the action and that first scene is a long and continuous battle - and the poor protagonist (Jon) hasn't got a clue what's going on or why…
        • Jay Northearn
          • Beyond Falcon's Reachplugin-autotooltip__default plugin-autotooltip_bigBeyond Falcon's Reach

            Beyond Falcon's Reach by Jay Northearn, is a mish-mash of high fantasy, gothic-horror, steampunk and electropunk, with a dash of semi-intelligent machine-learning AI's thrown-in to boot. Yet for all of this, the world Northearn has created is homogenous and holistic - two watchwords I'll bang on about until the cows come home, to anyone who'll listen. Giving everything in your world a place and a reason for being there is something that every writer should always keep i…
      • Non-Fiction
        • The Bluffers Guide to the Quantum Universeplugin-autotooltip__default plugin-autotooltip_bigThe Bluffers Guide to the Quantum Universe

          [The Bluffers Guide to the Quantum Universe]

          The Bluffers Guide to the Quantum Universe is a very funny guide (read: hilarious) to things surrounding quantum mechanics. Who the major players were, how the major theories won out over each other... or didn't. Tons of interesting facts you can toss around at parties and make it look like you know what you're talking about when discussing anything to do with quantum theory, quantum mechanics, who was who…
      • Sci-Fi
        • Andrew Bannister
          • Creation Machineplugin-autotooltip__default plugin-autotooltip_bigCreation Machine

            Andrew Bannister’s “Creation Machine” is the best novel I’ve read this year – and that’s saying something, I’ve read some of the best sci-fi novels from the last five years in the last ten months.

            The breadth and depth of his imagination is incredible. He’s created an entire artificial galaxy, given it character and taken us on a tour that is as exciting as it is varied.
          • Iron Godsplugin-autotooltip__default plugin-autotooltip_bigIron Gods

            Another novel of The Spin, and following on from Creation Machine, Iron Gods continues in much the same vein. There are intriguing and plausible characters, a spaceship AI that has had its lobotomy reversed, strange worlds and even stranger economic forces.
          • Stone Clockplugin-autotooltip__default plugin-autotooltip_bigStone Clock

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            Colony One Mars promises to be a fast-paced sci-fi thriller, and it certainly delivers. The prologue is short and sweet, and although it doesn't offer any story information that isn't in the story proper, it does set up the atmosphere for what is to follow. The tension ramps up very quickly and most unexpectedly, and everything changes before we've had a chance to grab our breath.
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blog:aardvaark:neo

Table of Contents

Near Earth Objects

Image © David A. Hardy www.astroart.org, reproduced by kind permission

The following data is reproduced from the NASA NEO (Near Earth Object) database, and is updated daily. Each record represents an object such as an asteroid or comet, and notes the date and approximate time the object is closest to the Earth as it passes by. The data is refreshed daily covering the period displayed on this page.

There are 4 tables and 2 graphs:

  1. 10 closest passing objects today->28 days ahead
  2. Objects passing by the Earth today
  3. Objects passing by in the next 28 days
  4. Objects that passed by in the last 7 days
  5. Graph for a 36-day period up 20 million km
  6. Graph for 15-day period up to 1 million kilometers

With each record, there is a link to a JPL page that offers more information on the object. Records are ordered by date and time. Distances are rounded to the nearest kilometre. Object diameters are in metres, and are averaged from current maximum and minimum estimates. Magnitude is absolute magnitude.

Last updated: Sat Sep 25th 00:00

Scatter Graphs

The graphs show time in the horizontal direction, and distance vertically. For the upper graph, the period is the same period as the data in the rest of this document: 36 days (the last 7 days, today and the next 28 days). Each grid square is 1 day wide and 1 million kilometres high. The graph shows any object that has or will pass within 20 million kilometres of Earth.

The lower graph focuses on a 7 day period on each side of the current date, and a distance limit of 1 million kilometres.

Close approach data for locations other than Earth have been filtered out.

Closest

Objects in this table are ordered by distance

Sep 25th 2021 - Oct 23rd 2021
Date Name Diameter Magnitude Km/s Distance
Sep-28 22:03 (2021 RG19) 45 24.921 15 827,836
Oct-06 12:56 (2021 RP12) 49 24.735 10 1,949,977
Oct-19 05:07 (2020 TH6) 7 28.800 6 2,787,951
Sep-30 11:57 (2021 RF2) 31 25.728 5 2,814,819
Oct-20 18:52 (1996 VB3) 164 22.100 15 3,364,904
Sep-27 03:46 (2021 RP10) 50 24.664 16 3,698,850
Oct-06 19:53 (1998 SD9) 71 23.900 11 4,065,387
Oct-07 13:37 (2015 TQ21) 14 27.400 21 4,113,098
Sep-30 04:35 (2021 RM5) 22 26.415 4 4,171,453
Oct-11 09:16 (2021 QF5) 62 24.205 7 5,910,018

Today

Objects in this and the following tables are ordered by date, sub-ordered by time.

Today
Date Name Diameter Magnitude Km/s Distance
Sep-25 03:24 12923 Zephyr (1999 GK4) 3,101 15.710 15 32,520,039
Sep-25 07:12 (2017 GL7) 118 22.800 10 10,138,828
Sep-25 08:30 (2018 HM2) 78 23.700 11 50,351,246
Sep-25 09:11 (2021 JO3) 27 26.020 7 62,568,289
Sep-25 09:52 (2015 XX168) 33 25.600 17 22,705,733
Sep-25 10:05 (2015 PC228) 541 19.500 26 71,559,874
Sep-25 13:03 (2017 SG10) 118 22.800 18 54,640,086
Sep-25 16:15 (2010 MH1) 236 21.300 9 66,998,019
Sep-25 18:53 (2021 RU) 36 25.387 9 9,221,730
Sep-25 20:11 (2002 XQ40) 142 22.400 11 44,546,877
Sep-25 20:17 (2019 QP5) 43 25.000 7 17,916,562
Sep-25 20:32 (2021 OX1) 489 19.720 2 62,875,503
Sep-25 23:37 (2021 QM3) 105 23.064 6 27,610,293

Looking Ahead

Next 28 Days
Date Name Diameter Magnitude Km/s Distance
Sep-26 00:00 (2020 FG6) 16 27.100 8 10,120,362
Sep-26 02:26 (2019 SF6) 25 26.200 9 6,262,552
Sep-26 02:38 (2008 SN1) 515 19.610 3 47,343,585
Sep-26 04:22 (2012 DX13) 68 24.000 30 27,959,848
Sep-26 04:30 (2015 SO2) 71 23.900 11 34,264,524
Sep-26 05:18 523593 (2001 TZ1) 682 19.000 21 34,863,849
Sep-26 09:30 (2015 FQ118) 319 20.650 26 70,900,739
Sep-26 14:17 (2018 SB2) 62 24.200 30 26,604,142
Sep-26 18:37 (2017 BU) 39 25.200 5 28,989,213
Sep-26 21:15 (2006 NL) 430 20.000 17 49,414,272
Sep-26 21:22 (2012 EP5) 216 21.500 14 37,720,514
Sep-26 23:32 (2021 GV3) 39 25.240 9 20,270,010
Sep-27 00:07 (2021 PE10) 325 20.610 6 32,690,139
Sep-27 02:56 (2013 RX73) 43 25.000 6 19,951,283
Sep-27 03:46 (2021 RP10) 50 24.664 16 3,698,850
Sep-27 04:07 497232 (2005 EF) 317 20.660 9 54,152,327
Sep-27 06:17 (2021 RG1) 81 23.630 16 14,838,053
Sep-27 14:57 (2017 PJ26) 583 19.340 17 57,270,440
Sep-27 15:12 (2012 TX284) 306 20.740 10 47,916,854
Sep-27 16:16 445305 (2010 DM56) 492 19.710 14 35,513,978
Sep-27 21:45 (2020 EJ) 78 23.700 16 49,824,918
Sep-28 01:11 (2021 QN3) 221 21.443 11 27,565,610
Sep-28 04:56 138947 (2001 BA40) 768 18.740 17 56,970,574
Sep-28 05:01 (2019 SD3) 195 21.720 10 47,478,664
Sep-28 05:26 235756 (2004 VC) 783 18.700 20 53,883,951
Date Name Diameter Magnitude Km/s Distance
Sep-28 05:42 (2019 SS2) 3 30.700 14 28,846,584
Sep-28 05:50 (2021 QP1) 118 22.802 5 33,582,029
Sep-28 07:09 (2020 JE1) 49 24.700 6 30,854,893
Sep-28 07:42 353938 (1998 QR15) 1,022 18.120 5 39,531,325
Sep-28 08:06 (2021 PV2) 208 21.580 10 32,162,303
Sep-28 15:16 (2020 CR2) 14 27.400 19 31,888,989
Sep-28 15:48 333889 (1998 SV4) 1,027 18.110 25 53,349,143
Sep-28 15:48 (2017 JL2) 216 21.500 22 41,427,579
Sep-28 22:03 (2021 RG19) 45 24.921 15 827,836
Sep-28 22:56 (2016 JC6) 228 21.380 12 57,971,141
Sep-29 00:15 (2021 PL23) 164 22.100 10 11,798,996
Sep-29 01:10 503911 (2002 FD6) 149 22.300 19 44,561,842
Sep-29 03:34 (2020 NJ1) 124 22.700 15 41,563,306
Sep-29 04:03 (2017 WA15) 682 19.000 20 28,058,354
Sep-29 05:12 (2012 BV13) 156 22.200 15 60,364,092
Sep-29 09:09 (2019 AC13) 136 22.500 12 37,416,181
Sep-29 10:38 (2021 RF4) 77 23.734 4 31,694,682
Sep-29 12:13 (2011 SG189) 363 20.370 22 38,935,183
Sep-29 12:32 (2021 RU14) 38 25.283 7 7,827,179
Sep-29 14:15 (2021 MO1) 831 18.570 9 40,098,678
Sep-29 17:35 (2020 HY) 108 23.000 21 72,969,426
Sep-29 18:11 (2021 RN12) 36 25.369 5 16,733,090
Sep-29 18:25 (2015 XV168) 14 27.500 13 52,344,360
Sep-29 19:42 (2018 GS4) 45 24.900 8 64,905,084
Sep-29 20:46 (2021 PV41) 108 23.005 10 17,669,070
Date Name Diameter Magnitude Km/s Distance
Sep-30 04:35 (2021 RM5) 22 26.415 4 4,171,453
Sep-30 07:25 (2021 RB2) 122 22.737 17 14,646,200
Sep-30 08:24 481790 (2008 TF4) 622 19.200 12 63,768,826
Sep-30 11:57 (2021 RF2) 31 25.728 5 2,814,819
Sep-30 13:57 523817 (2009 TK) 149 22.300 11 18,466,819
Sep-30 14:46 (2021 RN7) 58 24.367 9 14,376,546
Oct-01 02:34 (2021 RG14) 74 23.824 5 43,155,213
Oct-01 03:46 (2013 JE1) 622 19.200 21 26,463,244
Oct-01 04:10 (2018 RR5) 24 26.300 11 33,852,035
Oct-01 06:17 386504 (2009 BP58) 783 18.700 17 31,780,400
Oct-01 07:32 (2013 JV17) 12 27.800 9 71,070,729
Oct-01 14:03 (2018 TB3) 20 26.700 16 15,884,429
Oct-01 21:58 138893 (2000 YH66) 1,051 18.060 17 64,716,713
Oct-01 22:00 (2012 QL14) 57 24.400 22 49,369,183
Oct-02 04:23 533372 (2014 GG17) 392 20.200 24 24,736,601
Oct-02 04:35 (2018 CC1) 86 23.500 11 29,041,486
Oct-02 09:35 (2017 VV1) 411 20.100 23 38,111,787
Oct-02 14:30 (2021 JM7) 71 23.910 23 72,258,212
Oct-02 18:22 (2020 BZ13) 5 29.900 32 53,467,476
Oct-02 19:45 (2021 QJ2) 73 23.846 8 20,979,897
Oct-03 00:38 (2019 TO) 206 21.600 19 74,288,205
Oct-03 02:32 (2012 VE46) 392 20.200 17 50,176,809
Oct-03 05:07 283460 (2001 PD1) 963 18.250 3 41,172,472
Oct-03 06:07 (2002 GQ5) 291 20.850 10 41,625,668
Oct-03 07:13 (2014 DE23) 49 24.700 20 57,113,600
Date Name Diameter Magnitude Km/s Distance
Oct-03 07:34 (2017 TJ4) 39 25.200 12 18,107,208
Oct-03 09:24 (2016 EK84) 226 21.400 20 36,694,005
Oct-03 10:27 308635 (2005 YU55) 179 21.900 9 36,927,319
Oct-03 10:40 (2006 TU7) 179 21.900 27 67,959,375
Oct-03 10:59 100004 (1983 VA) 2,299 16.360 27 60,740,999
Oct-03 14:49 (2019 SY8) 47 24.800 2 33,725,601
Oct-03 16:57 (2018 RJ3) 12 27.800 19 58,861,535
Oct-03 17:15 (2016 RM20) 25 26.200 5 15,121,749
Oct-03 18:23 (2021 JG6) 68 24.010 4 18,051,548
Oct-04 01:53 (2001 CQ36) 136 22.500 7 34,096,542
Oct-04 06:14 (2021 EM4) 16 27.140 6 31,468,395
Oct-04 15:29 (2012 SU9) 16 27.200 8 29,906,591
Oct-04 15:31 494710 (2005 MO13) 298 20.800 14 62,016,383
Oct-04 16:23 (2021 RG7) 318 20.654 20 52,937,641
Oct-04 18:44 519354 (2011 KR12) 218 21.480 15 55,803,529
Oct-05 02:38 (2021 RS4) 42 25.035 10 11,334,659
Oct-05 03:36 (2021 PY40) 268 21.026 10 12,541,988
Oct-05 04:59 (2002 RO137) 316 20.670 5 30,596,247
Oct-05 10:31 (2020 CA2) 59 24.300 10 29,698,284
Oct-05 10:34 (2019 WW) 52 24.600 9 53,934,616
Oct-05 11:15 (2021 RJ15) 69 23.967 5 34,427,598
Oct-05 11:21 (2008 TZ) 36 25.400 8 22,390,633
Oct-05 14:11 (2019 FS) 472 19.800 18 35,356,457
Oct-05 17:43 408982 (2002 SP) 319 20.650 27 51,332,725
Oct-05 17:48 (2021 JB1) 16 27.200 10 61,077,561
Date Name Diameter Magnitude Km/s Distance
Oct-05 17:49 (2019 KK5) 118 22.800 22 66,599,855
Oct-05 20:21 (2003 LH) 39 25.200 14 51,704,968
Oct-05 21:53 (2020 SK4) 4 30.400 17 56,766,478
Oct-06 06:03 503871 (2000 SL) 1,027 18.110 24 65,577,036
Oct-06 09:28 (2018 CW2) 30 25.800 12 65,527,203
Oct-06 12:56 (2021 RP12) 49 24.735 10 1,949,977
Oct-06 13:36 365424 (2010 KX7) 179 21.900 19 56,111,400
Oct-06 16:15 264357 (2000 AZ93) 259 21.100 7 58,330,756
Oct-06 19:16 (2012 HA2) 247 21.200 21 19,678,894
Oct-06 19:53 (1998 SD9) 71 23.900 11 4,065,387
Oct-06 20:02 (2020 UM5) 27 26.000 28 65,139,520
Oct-06 20:19 (2018 TQ1) 75 23.800 11 27,431,009
Oct-06 21:12 (2005 QQ11) 145 22.360 5 32,866,059
Oct-06 21:17 537342 (2015 KN120) 348 20.460 18 38,744,804
Oct-06 23:31 (2007 SW2) 236 21.300 24 52,594,021
Oct-06 23:46 (2016 TH93) 130 22.600 17 67,032,583
Oct-07 01:04 363027 (1998 ST27) 541 19.500 14 28,075,555
Oct-07 01:41 162694 (2000 UH11) 517 19.600 22 54,238,776
Oct-07 03:39 (2017 HX3) 188 21.800 8 38,522,925
Oct-07 06:21 (2019 AF12) 594 19.300 11 47,174,315
Oct-07 10:07 (2020 MO3) 52 24.600 9 16,137,005
Oct-07 10:29 (2021 JR2) 54 24.500 9 63,071,301
Oct-07 13:37 (2015 TQ21) 14 27.400 21 4,113,098
Oct-07 13:55 (2021 PR16) 20 26.640 1 9,515,813
Oct-07 17:36 (2017 LX) 24 26.300 16 41,669,435
Date Name Diameter Magnitude Km/s Distance
Oct-07 18:03 (2019 SS8) 36 25.400 11 48,543,012
Oct-07 19:51 (2021 HB) 19 26.740 14 73,451,858
Oct-07 23:54 (2016 KL1) 247 21.200 14 60,789,587
Oct-08 03:05 (2015 UC67) 517 19.600 11 70,531,524
Oct-08 03:36 (2020 GB1) 18 26.900 6 22,140,450
Oct-08 12:00 (2019 SB6) 19 26.800 7 7,786,134
Oct-08 12:30 (2018 SR3) 34 25.500 16 61,618,688
Oct-08 15:13 (2021 PB15) 182 21.870 6 8,348,144
Oct-08 19:02 (2020 HM3) 47 24.800 16 38,809,889
Oct-08 22:15 (2000 EY106) 622 19.200 20 55,076,885
Oct-08 22:18 (2021 RG4) 72 23.895 5 25,766,457
Oct-09 01:00 (2016 TG56) 86 23.500 15 50,456,087
Oct-09 03:50 (2021 BE3) 68 24.000 8 66,268,429
Oct-09 13:08 471108 (2010 CL1) 567 19.400 11 62,354,667
Oct-09 16:03 (2021 RV16) 289 20.861 14 73,486,050
Oct-09 16:43 (2021 PA2) 605 19.260 16 31,281,635
Oct-09 16:50 (2021 PT6) 234 21.320 10 30,617,078
Oct-09 18:44 (2007 TR68) 28 25.900 20 64,662,304
Oct-09 19:57 (2021 RE1) 124 22.702 7 22,158,140
Oct-09 20:58 (2017 SG12) 86 23.500 3 47,183,415
Oct-09 22:32 302156 (2001 SF286) 704 18.930 18 74,440,465
Oct-09 23:01 286079 (2001 TW1) 651 19.100 20 22,677,469
Oct-10 00:12 (2012 UC34) 99 23.200 19 54,860,272
Oct-10 04:24 (2007 DL41) 312 20.700 20 30,718,815
Oct-10 08:07 (2021 RF5) 51 24.638 9 7,625,671
Date Name Diameter Magnitude Km/s Distance
Oct-10 08:31 474585 (2004 HC2) 541 19.500 26 68,926,057
Oct-10 12:53 (2019 EK2) 14 27.500 15 32,173,170
Oct-10 18:16 (2021 RQ12) 82 23.586 8 29,381,596
Oct-10 19:19 230111 (2001 BE10) 651 19.100 15 72,040,368
Oct-10 20:08 (2018 HA1) 164 22.100 20 46,135,329
Oct-10 21:34 (2017 RN16) 7 28.900 5 44,507,941
Oct-10 22:56 85770 (1998 UP1) 342 20.500 16 49,150,063
Oct-11 09:07 (2014 RE11) 124 22.700 24 56,957,718
Oct-11 09:16 (2021 QF5) 62 24.205 7 5,910,018
Oct-11 11:43 (2019 SE5) 20 26.700 7 6,239,171
Oct-11 14:19 (2021 RH14) 167 22.050 3 46,901,474
Oct-11 17:55 (2019 SV4) 247 21.200 16 71,013,243
Oct-11 19:16 (2016 GV221) 45 24.900 18 44,310,307
Oct-11 19:23 (2019 TZ6) 12 27.700 8 22,218,609
Oct-11 22:37 (2019 BJ2) 94 23.300 7 65,894,445
Oct-11 23:09 (2011 JB10) 49 24.700 9 70,453,144
Oct-12 00:35 (2016 FU6) 7 28.900 20 49,163,103
Oct-12 00:44 (2004 FG29) 27 26.000 17 71,620,818
Oct-12 01:15 (2016 CD31) 18 26.900 25 49,043,717
Oct-12 01:59 (2009 UQ5) 62 24.200 12 49,070,106
Oct-12 04:18 (2013 HL11) 94 23.300 17 58,168,239
Oct-12 13:02 (2019 RY) 47 24.800 5 18,593,776
Oct-12 14:43 (2021 PD9) 162 22.120 4 31,112,703
Oct-12 15:14 (2020 UF3) 9 28.380 29 42,510,767
Oct-12 16:03 (2021 LQ24) 407 20.120 10 16,744,509
Date Name Diameter Magnitude Km/s Distance
Oct-12 18:05 (2020 TC2) 303 20.760 25 46,607,352
Oct-12 22:19 (2020 TE2) 24 26.300 9 17,580,066
Oct-13 01:57 (2014 KA91) 34 25.500 6 24,287,903
Oct-13 02:10 (2008 SY150) 49 24.700 16 38,212,311
Oct-13 07:50 (2021 CT1) 37 25.300 6 30,951,757
Oct-13 11:28 (2018 VF4) 37 25.300 11 31,043,596
Oct-13 13:31 (2001 UP) 31 25.700 18 48,658,233
Oct-13 14:14 (2019 UN3) 62 24.200 21 41,458,428
Oct-13 15:12 (2020 UC4) 26 26.100 20 57,148,313
Oct-13 16:19 (2019 SW8) 31 25.700 16 53,322,355
Oct-14 02:57 (2021 JK2) 48 24.770 10 49,599,619
Oct-14 05:14 513171 (2004 MD6) 358 20.400 26 68,041,691
Oct-14 08:42 (2015 TG145) 57 24.400 17 31,385,910
Oct-14 14:44 86450 (2000 CK33) 928 18.330 15 68,035,523
Oct-14 21:34 (2019 TA7) 24 26.300 16 23,606,918
Oct-14 21:44 417655 (2006 YF13) 450 19.900 9 45,893,154
Oct-14 22:26 (2016 TD55) 179 21.900 13 57,609,111
Oct-14 23:11 (2014 KB91) 385 20.240 18 43,821,639
Oct-15 00:26 (2021 JT) 15 27.340 6 60,377,226
Oct-15 04:02 (2021 RR1) 157 22.184 5 28,190,088
Oct-15 04:21 (2009 UM) 271 21.000 26 72,093,059
Oct-15 04:23 (2021 QL5) 320 20.640 12 54,540,762
Oct-15 05:51 (2021 HB2) 9 28.340 7 20,849,507
Oct-15 06:49 (2019 RE1) 7 28.900 4 69,613,661
Oct-15 06:52 (2017 XV60) 30 25.800 8 18,317,588
Date Name Diameter Magnitude Km/s Distance
Oct-15 09:12 (2021 JG9) 39 25.200 14 65,903,884
Oct-15 15:18 (2017 VH1) 71 23.900 12 48,772,380
Oct-15 17:13 (2015 UG) 118 22.810 9 73,294,272
Oct-15 17:54 (2020 BF10) 16 27.200 8 47,801,812
Oct-15 20:38 260141 (2004 QT24) 941 18.300 19 46,829,918
Oct-15 22:47 (2015 YU7) 236 21.300 8 56,260,783
Oct-15 23:18 (2020 DA1) 5 29.800 11 73,085,672
Oct-16 05:58 (1998 SL36) 375 20.300 11 39,251,365
Oct-16 13:18 (2020 CK1) 21 26.600 7 45,021,802
Oct-16 13:31 (2017 UD8) 65 24.100 10 29,443,927
Oct-17 00:10 (2015 PL57) 31 25.700 5 41,173,636
Oct-17 00:45 (2019 CZ) 24 26.300 4 50,690,088
Oct-17 05:13 (2005 JO3) 411 20.100 22 39,309,787
Oct-17 11:30 469219 Kamo`oalewa (2016 HO3) 59 24.330 5 21,194,092
Oct-17 14:58 52750 (1998 KK17) 2,196 16.460 7 67,224,919
Oct-17 17:19 (1999 FJ21) 375 20.300 13 9,701,019
Oct-17 17:40 (2012 UC) 43 25.000 14 20,311,335
Oct-17 21:30 (2000 TH1) 130 22.600 16 43,935,545
Oct-17 22:46 453707 (2010 XY72) 768 18.740 17 30,778,384
Oct-17 23:00 (2007 GW5) 206 21.600 13 68,426,395
Oct-18 03:12 (2015 XT1) 94 23.300 9 11,462,915
Oct-18 06:32 (2018 RO5) 33 25.600 6 29,127,009
Oct-18 07:19 (2018 PG22) 233 21.330 10 26,886,251
Oct-18 09:59 (2021 GB4) 51 24.630 13 53,843,241
Oct-18 12:19 (2016 SZ35) 136 22.500 16 47,937,583
Date Name Diameter Magnitude Km/s Distance
Oct-18 15:53 (2021 RO1) 130 22.591 7 18,524,860
Oct-18 18:43 (2020 HW3) 164 22.100 30 56,300,476
Oct-18 19:09 (2017 VD) 298 20.800 20 35,688,790
Oct-18 20:57 (2021 LH5) 262 21.080 19 37,492,055
Oct-19 03:18 (2009 SJ18) 52 24.600 13 52,311,597
Oct-19 03:36 (2018 EB) 179 21.900 20 61,076,956
Oct-19 03:44 (2014 YF) 130 22.600 4 10,581,988
Oct-19 04:01 (2021 HA) 33 25.580 6 47,351,926
Oct-19 05:07 (2020 TH6) 7 28.800 6 2,787,951
Oct-19 10:03 416195 (2002 TR190) 567 19.400 17 32,923,734
Oct-19 11:54 (2004 TD10) 164 22.100 23 57,485,447
Oct-19 12:03 (2018 RU1) 164 22.100 4 56,184,987
Oct-19 16:52 (2008 TV25) 430 20.000 24 72,394,045
Oct-19 17:26 (2003 YG136) 37 25.300 9 47,590,316
Oct-19 18:10 (2011 UC64) 11 27.900 17 14,677,898
Oct-19 19:56 (2015 YO10) 21 26.600 12 56,508,458
Oct-19 22:37 (2013 JE29) 86 23.500 15 9,292,595
Oct-19 23:02 (2019 UA1) 26 26.100 11 11,534,761
Oct-19 23:46 (2017 SU17) 11 28.000 22 68,510,396
Oct-20 02:20 (2019 UM9) 15 27.300 13 36,634,639
Oct-20 05:04 (2017 WB1) 12 27.700 18 46,111,475
Oct-20 06:04 (2020 UJ7) 28 25.945 11 43,727,244
Oct-20 06:19 (2001 GP2) 23 26.400 11 43,752,758
Oct-20 08:53 (2021 BP1) 5 29.600 6 31,403,127
Oct-20 12:03 (2016 TJ55) 71 23.900 27 57,441,574
Date Name Diameter Magnitude Km/s Distance
Oct-20 15:57 (2021 LA1) 39 25.220 6 33,986,520
Oct-20 16:24 (2017 SP19) 118 22.800 7 10,568,189
Oct-20 18:02 (2008 WK60) 142 22.400 18 53,240,126
Oct-20 18:52 (1996 VB3) 164 22.100 15 3,364,904
Oct-20 19:09 (2021 PH4) 260 21.090 10 11,327,205
Oct-20 20:04 (2021 QJ6) 261 21.088 9 29,118,495
Oct-20 22:56 (2015 VW1) 206 21.600 5 52,409,305
Oct-21 07:17 (2021 HY) 37 25.340 17 29,222,150
Oct-21 10:06 (2020 PK3) 49 24.700 11 36,254,553
Oct-21 13:22 (2021 GQ10) 20 26.650 6 9,391,397
Oct-21 13:39 (2021 JE5) 167 22.060 15 60,200,126
Oct-21 22:48 (2021 RE10) 65 24.101 5 5,920,212
Oct-22 01:11 (2019 SU6) 23 26.400 29 70,656,222
Oct-22 03:50 (2016 UO41) 57 24.400 21 37,259,040
Oct-22 03:57 (2019 GJ) 59 24.300 6 22,989,095
Oct-22 04:00 (2014 TX32) 392 20.200 13 45,828,726
Oct-22 06:41 (2021 AR) 70 23.950 11 69,236,201
Oct-22 07:37 (2020 TW1) 14 27.500 19 63,360,467
Oct-22 08:26 (2013 UM9) 52 24.600 11 20,202,598
Oct-22 10:29 (2021 RE19) 64 24.121 6 20,987,818
Oct-22 12:48 (2016 SX1) 8 28.600 12 43,695,989
Oct-22 13:27 (2020 YW3) 31 25.730 10 49,817,209
Oct-22 17:42 (2018 UC) 28 25.900 16 29,685,219
Oct-22 18:57 (2018 VA4) 9 28.300 15 40,746,688
Oct-22 19:39 (2021 JJ4) 26 26.130 13 58,020,612
Date Name Diameter Magnitude Km/s Distance
Oct-22 21:27 (2010 XU10) 14 27.400 7 25,183,479
Oct-23 00:49 (2006 FK) 236 21.300 17 58,239,389
Oct-23 01:09 442742 (2012 WP3) 1,252 17.680 12 55,558,927
Oct-23 02:08 (2019 FM2) 325 20.610 16 55,373,203
Oct-23 12:09 (2018 WD2) 25 26.200 20 63,414,000
Oct-23 20:29 (2019 UC8) 25 26.200 9 15,257,189
Oct-23 21:24 (2016 NL56) 284 20.900 13 46,167,458
Oct-23 22:10 (2020 JN2) 75 23.800 14 44,981,715
Oct-23 23:09 (2021 NL2) 267 21.032 13 46,105,592
Oct-23 23:29 (2003 DF16) 450 19.900 14 59,573,143

Last Week

Last 7 Days
Date Name Diameter Magnitude Km/s Distance
Sep-18 01:23 (2005 QN11) 415 20.080 3 46,520,242
Sep-18 01:31 (2021 SH) 14 27.407 7 1,563,985
Sep-18 01:33 (2021 RH19) 130 22.599 11 34,760,026
Sep-18 02:07 (2021 RP1) 220 21.452 9 49,117,732
Sep-18 02:26 (2018 GY1) 164 22.100 20 31,415,577
Sep-18 02:43 (2008 JZ7) 819 18.600 20 60,158,466
Sep-18 03:42 (2021 RR12) 21 26.537 8 10,074,521
Sep-18 04:43 (2019 UH9) 39 25.200 13 51,718,539
Sep-18 06:36 (2016 RS) 94 23.300 6 22,607,313
Sep-18 07:32 (2021 RZ) 329 20.582 18 42,427,354
Sep-18 07:47 (2012 SG32) 179 21.900 20 63,513,613
Sep-18 10:03 (2021 RY5) 33 25.585 9 1,339,897
Sep-18 10:16 (2021 RR4) 18 26.891 6 5,237,952
Sep-18 10:42 (2014 HO129) 622 19.200 31 18,402,201
Sep-18 11:19 (2021 RN3) 40 25.134 10 9,217,874
Sep-18 15:00 (2014 HA177) 411 20.100 6 70,455,317
Sep-18 15:05 (2009 SL104) 90 23.400 12 28,615,392
Sep-18 19:59 (2006 MV1) 19 26.800 16 59,699,092
Sep-18 22:25 (2021 RH12) 9 28.497 6 438,010
Sep-18 23:16 (2021 QA2) 66 24.061 13 4,075,982
Sep-19 01:00 (2014 DQ) 49 24.700 19 66,710,022
Sep-19 01:13 (2019 SU1) 9 28.400 11 33,861,704
Sep-19 03:16 (2021 RM7) 45 24.923 21 8,800,589
Sep-19 04:55 (2014 FO47) 375 20.300 20 68,022,896
Sep-19 08:27 (2021 ET) 227 21.390 17 63,049,675
Date Name Diameter Magnitude Km/s Distance
Sep-19 08:34 (2021 RD20) 167 22.053 19 11,047,564
Sep-19 09:04 (2021 RU16) 176 21.934 13 35,457,174
Sep-19 10:22 (2019 RC3) 124 22.700 17 52,494,328
Sep-19 12:11 (2018 RT1) 71 23.900 21 73,795,905
Sep-19 14:18 (2021 PC17) 125 22.690 14 23,731,786
Sep-19 14:38 (2021 JR1) 92 23.360 11 53,751,147
Sep-19 16:43 (2016 SE) 30 25.800 9 17,423,411
Sep-19 19:01 255501 (2006 BG) 801 18.650 17 37,371,615
Sep-19 19:31 (2017 FN64) 156 22.200 15 21,619,473
Sep-19 22:10 (2017 QO35) 90 23.400 14 63,704,968
Sep-19 23:12 (2021 RN14) 18 26.895 12 735,702
Sep-20 01:08 (2002 SN) 298 20.800 4 51,347,152
Sep-20 02:34 (2021 SB) 26 26.112 11 5,503,331
Sep-20 03:30 138404 (2000 HA24) 645 19.120 13 21,949,219
Sep-20 07:01 (2021 RD2) 100 23.177 26 18,392,465
Sep-20 07:38 (2021 GO1) 92 23.340 13 44,663,853
Sep-20 08:40 (2019 AY9) 242 21.250 14 47,492,032
Sep-20 08:51 (2006 SG7) 113 22.900 30 63,834,807
Sep-20 11:30 504800 (2010 CO1) 179 21.900 19 38,022,549
Sep-20 13:54 (2021 RZ7) 30 25.813 13 2,381,939
Sep-20 14:48 (2017 SL16) 28 25.900 6 4,893,344
Sep-20 15:08 (2008 UO90) 334 20.550 2 74,189,108
Sep-20 15:10 (2021 EZ2) 51 24.610 11 48,441,968
Sep-20 15:39 (2021 RL3) 78 23.701 23 2,922,341
Sep-20 17:45 (2021 EO4) 751 18.790 17 49,251,111
Date Name Diameter Magnitude Km/s Distance
Sep-20 18:17 (2021 PU2) 221 21.450 12 45,777,617
Sep-20 18:38 (2015 CO3) 236 21.300 16 63,984,783
Sep-20 19:46 (2021 CH8) 47 24.820 9 66,889,747
Sep-20 20:35 453563 (2010 BB) 375 20.300 11 58,256,285
Sep-20 22:37 (2006 WV1) 28 25.900 11 25,099,144
Sep-21 00:52 (2019 RH1) 45 24.910 9 30,100,776
Sep-21 02:36 (2006 HJ18) 188 21.800 18 51,981,603
Sep-21 03:31 (2007 AM) 197 21.700 12 68,186,488
Sep-21 03:33 (2021 RV19) 24 26.298 10 2,932,358
Sep-21 04:40 (2021 RX9) 28 25.932 15 3,163,481
Sep-21 11:12 (2021 RP9) 56 24.418 18 6,037,407
Sep-21 11:49 (2021 RN16) 9 28.414 10 480,363
Sep-21 11:55 (2017 SS10) 39 25.200 20 49,335,676
Sep-21 14:54 (2020 WY) 25 26.200 5 17,011,031
Sep-21 15:35 (2021 RV6) 121 22.762 9 33,294,330
Sep-21 21:54 (2019 DH1) 25 26.200 11 28,557,729
Sep-21 22:13 (2006 SD6) 385 20.240 20 50,163,175
Sep-21 22:29 (2021 RH4) 40 25.160 7 8,383,982
Sep-22 01:49 (2018 RY3) 36 25.400 27 39,185,606
Sep-22 03:57 (2012 FT35) 6 29.200 11 50,837,521
Sep-22 08:30 (2021 SO) 37 25.351 6 5,816,223
Sep-22 10:48 (2021 RS) 45 24.919 3 7,115,087
Sep-22 10:52 (2007 RY19) 126 22.670 11 14,288,071
Sep-22 12:52 (2009 DJ46) 33 25.600 18 48,234,773
Sep-22 14:41 (2021 NY1) 215 21.510 9 1,498,077
Date Name Diameter Magnitude Km/s Distance
Sep-22 17:13 (2019 SM2) 26 26.100 13 51,141,971
Sep-22 23:41 (2018 LX5) 39 25.200 11 54,971,749
Sep-22 23:44 (2020 OT6) 409 20.110 10 74,463,356
Sep-23 01:33 (2004 RO111) 94 23.300 14 22,792,866
Sep-23 01:58 138175 (2000 EE104) 364 20.360 8 35,675,970
Sep-23 02:37 (2015 RJ83) 312 20.700 9 43,698,731
Sep-23 02:42 (2021 RT3) 70 23.946 5 24,532,827
Sep-23 03:51 (2019 SJ9) 16 27.100 10 10,448,380
Sep-23 04:00 (2017 QG33) 86 23.500 21 63,865,212
Sep-23 04:53 (2021 PF2) 51 24.620 5 7,707,623
Sep-23 09:01 312070 (2007 TA19) 567 19.400 16 23,087,555
Sep-23 09:32 (2021 RD6) 65 24.098 14 9,767,183
Sep-23 11:07 (2014 HB177) 10 28.100 4 10,545,097
Sep-23 12:35 (2011 SM5) 94 23.300 14 42,973,923
Sep-23 13:59 (2006 SF7) 149 22.300 15 18,568,394
Sep-23 17:33 (2020 XF4) 13 27.570 7 43,434,436
Sep-23 18:20 (2019 SJ8) 54 24.500 15 44,287,834
Sep-23 18:50 152664 (1998 FW4) 505 19.650 21 17,210,888
Sep-23 19:05 (2021 QZ4) 118 22.802 8 44,056,796
Sep-23 19:35 (2016 TU19) 57 24.400 25 71,940,225
Sep-23 20:48 (2021 RF1) 79 23.693 5 18,417,502
Sep-23 22:06 (2018 LJ5) 289 20.860 2 59,645,053
Sep-23 23:04 143649 (2003 QQ47) 1,418 17.410 30 14,737,436
Sep-23 23:44 (2006 SF77) 206 21.600 21 25,414,091
Sep-24 01:28 (2021 SK) 37 25.349 13 5,111,323
Date Name Diameter Magnitude Km/s Distance
Sep-24 02:08 220909 (2005 EO1) 999 18.170 28 59,873,607
Sep-24 02:35 (2020 FA1) 23 26.370 7 30,325,110
Sep-24 03:15 (2020 SP) 16 27.100 7 31,737,819
Sep-24 03:26 (2014 RA) 7 28.900 25 62,425,822
Sep-24 03:47 (2021 QV6) 112 22.925 13 3,565,241
Sep-24 04:24 (2021 EW3) 21 26.590 7 61,749,269
Sep-24 10:09 (2021 RW9) 279 20.937 41 30,582,848
Sep-24 10:57 (2021 GL10) 89 23.410 7 10,889,064
Sep-24 11:37 (2021 PO41) 712 18.905 15 53,705,493
Sep-24 17:48 (2017 EQ13) 450 19.900 25 50,650,671
Sep-24 20:43 (2019 DU) 16 27.200 18 51,787,226
Sep-24 21:40 (2015 BK509) 142 22.400 21 35,441,901

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