Philip P. Ide

Author, programmer, science enthusiast, half-wit.
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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). The provisional location is Long/Lat 77.4508E / 18.4446N (this will be updated when NASA release full details).
      • 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: 19:35 Thu. Mar 4th, 2021 GMT
      • NASA Image of the Dayplugin-autotooltip__default plugin-autotooltip_bigNASA Image of the Day

        Date: Fri 5th March, 2021

        Title: A Little Like Mars

        The surface of this planet looks a little like Mars. It's really planet Earth though. In a digitally stitched little planet projection, the 360 degree mosaic was captured near San Pedro in the Chilean Atacama desert. Telescopes in domes on the horizon are taking advantage of the region's famously dark, clear nights. Taken in early December, a magnificent Milky Way arcs above the horizon for almost 180 degrees around t…
      • 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.
        • 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 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

            The third outing in The Spin series from acclaimed author Andrew Bannister, Stone Clock, has a dark edge to it. Already an accomplished writer, Bannister has taken things up a notch.

            His usual mélange of lucid and slightly demented imagination is in full force, and the array of modes of humour are all present and permeate the pages as if they’d been dipped in the stuff.
        • chris_morton
          • Hard-Boiled Wonderlandplugin-autotooltip__default plugin-autotooltip_bigHard-Boiled Wonderland

            [Hard-Boiled Wonderland]

            Chris Morton is a writer with a certain pedigree, having been shortlisted for a Guardian award, this story is his third novel and his first in science-fiction.

            It tells the story of a man (Maggie Flycatcher) who has almost certainly the most boring job in history: he's a lemon tree supervisor. The creative talent that can come up with such a pointless job is one that deserves some recognition, so it instantly grabbed my attention. Flycatcher's …
        • Gerald M. Kilby
          • Colony One Marsplugin-autotooltip__default plugin-autotooltip_bigColony One Mars

            [Colony One Mars] [4.5 stars]

            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.
          • Colony Three Marsplugin-autotooltip__default plugin-autotooltip_bigColony Three Mars

            [Colony Three Mars by Gerald M. Kilby] [4 Stars] The third instalment in the saga is even messier (for the protagonists) than the previous two, ramping up the tension and the action, and making the solution even harder for the reader to predict. The cast of protagonists has grown a little, but that's fair because the cast of antagonists has too.
          • Colony Two Marsplugin-autotooltip__default plugin-autotooltip_bigColony Two Mars

            [Colony Two Mars] [4 Stars] Colony Two Mars picks up the story a few years after the preceding story, Colony One Mars left off. I really enjoyed the first instalment in this trilogy, but this is a much better, much stronger story. As the overarching story of the trilogy begins to emerge, Kilby's eye for a good story starts to pay dividends.
        • Science Fiction Double Featureplugin-autotooltip__default plugin-autotooltip_bigScience Fiction Double Feature

          [Science Fiction Double Feature ]

          This pair of novellas comes courtesy of Zombie Pirate Publishing, and indeed the stories themselves come from the publishing house's founders and resident editors, Sam M. Phillips (Into the Eye) and Adam Bennett (Phosphorus).

          Since they come as a pair it is necessary of me to review each in turn before giving an overall impression, and I've chosen the order they appear between the covers.
  • wiki
    • DokuWikiplugin-autotooltip__default plugin-autotooltip_bigDokuWiki

      wiki:dokuwiki DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database. It is loved by users for its clean and readable Formatting Syntax. The ease of maintenance, backup and integration makes it an administrator's favorite. Built in
    • Formatting Syntaxplugin-autotooltip__default plugin-autotooltip_bigFormatting Syntax

      DokuWiki supports some simple markup language, which tries to make the datafiles to be as readable as possible. This page contains all possible syntax you may use when editing the pages. Simply have a look at the source of this page by pressing
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: Fri Mar 5th 00:01

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

Mar 5th 2021 - Apr 2nd 2021
Date Name Diameter Magnitude Km/s Distance
Mar-10 11:42 (2021 CF6) 75 23.790 8 1,611,273
Mar-21 16:03 231937 (2001 FO32) 1,240 17.700 34 2,016,395
Mar-06 17:43 (2021 EB) 53 24.549 13 2,729,636
Mar-27 04:12 (2021 CX5) 59 24.330 6 2,943,307
Mar-05 05:29 (2021 CN3) 24 26.300 4 4,274,997
Mar-05 08:58 (2021 CF8) 65 24.100 12 4,414,473
Mar-08 05:01 (2021 DL) 42 25.070 6 4,528,737
Mar-27 16:43 (2020 GE) 10 28.150 2 4,866,220
Mar-10 09:48 535844 (2015 BY310) 197 21.700 7 5,429,583
Mar-31 16:39 (2019 GM1) 16 27.100 4 5,774,115

Today

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

Today
Date Name Diameter Magnitude Km/s Distance
Mar-05 02:44 (2019 QP2) 49 24.700 12 26,668,500
Mar-05 04:25 (2018 DD2) 14 27.400 12 24,534,528
Mar-05 05:29 (2021 CN3) 24 26.300 4 4,274,997
Mar-05 06:06 (1999 SK10) 494 19.700 17 53,524,186
Mar-05 06:35 (2017 RV15) 171 22.000 12 43,132,428
Mar-05 08:56 (2009 WP25) 494 19.700 25 70,064,496
Mar-05 08:58 (2021 CF8) 65 24.100 12 4,414,473
Mar-05 09:33 (2020 RR) 237 21.290 21 31,891,049
Mar-05 09:49 (2019 LB1) 17 27.000 3 21,108,155
Mar-05 22:36 (2020 PG6) 18 26.900 6 49,878,601
Mar-05 23:09 (2014 QT296) 247 21.200 18 24,019,856

Looking Ahead

Next 28 Days
Date Name Diameter Magnitude Km/s Distance
Mar-06 00:31 (2020 UY2) 16 27.200 9 65,522,963
Mar-06 01:15 99942 Apophis (2004 MN4) 494 19.700 5 16,852,407
Mar-06 01:25 (2020 PP3) 43 25.000 8 58,461,682
Mar-06 04:00 (2016 EQ84) 65 24.100 28 60,954,000
Mar-06 05:28 (2016 EB27) 113 22.900 24 12,425,674
Mar-06 08:19 (2021 CC9) 52 24.570 7 17,511,558
Mar-06 10:57 470864 (2008 YV148) 342 20.500 4 47,676,015
Mar-06 13:07 (2011 TO) 24 26.300 5 33,184,438
Mar-06 13:28 (2016 EL27) 26 26.100 19 54,925,309
Mar-06 17:43 (2021 EB) 53 24.549 13 2,729,636
Mar-06 20:34 138127 (2000 EE14) 1,696 17.020 15 25,147,449
Mar-06 22:32 259221 (2003 BA21) 651 19.100 42 73,528,137
Mar-07 00:18 (2021 CC8) 54 24.500 6 24,308,864
Mar-07 02:03 (2021 DJ2) 60 24.270 7 17,612,313
Mar-07 03:39 (2016 EM84) 94 23.300 15 63,817,149
Mar-07 08:45 (2019 RD2) 82 23.600 23 71,520,323
Mar-07 09:49 (2021 CN4) 312 20.700 7 17,008,164
Mar-07 10:09 (2018 CH) 23 26.400 8 22,882,984
Mar-07 12:29 (2012 EP3) 34 25.500 10 14,383,290
Mar-07 19:51 (2009 EM1) 108 23.000 12 19,617,358
Mar-08 01:15 (2014 RC) 19 26.800 8 70,676,573
Mar-08 04:38 (2016 GL135) 312 20.700 26 60,687,279
Mar-08 05:01 (2021 DL) 42 25.070 6 4,528,737
Mar-08 06:18 (2021 CF2) 68 24.010 6 16,578,011
Mar-08 06:44 (2021 CT10) 57 24.390 9 26,311,980
Date Name Diameter Magnitude Km/s Distance
Mar-08 07:57 (2018 CX1) 398 20.170 24 27,636,723
Mar-08 13:05 (2016 EJ56) 206 21.600 25 41,879,443
Mar-08 14:41 (2006 QU89) 259 21.100 8 66,204,088
Mar-08 18:14 (2008 UB95) 47 24.800 10 9,159,086
Mar-08 21:58 (2010 FS) 62 24.200 12 22,363,803
Mar-09 01:55 (2020 VY4) 43 25.000 10 61,319,990
Mar-09 08:55 (2019 GE1) 17 27.000 5 24,271,069
Mar-09 13:49 523637 (2010 LT108) 494 19.700 20 25,683,567
Mar-09 16:47 (2010 KQ10) 202 21.640 13 33,690,715
Mar-09 17:31 (2012 SJ58) 26 26.100 10 8,630,684
Mar-09 19:55 (2017 GS5) 68 24.000 16 60,641,700
Mar-09 23:49 (2015 FM34) 149 22.300 11 8,453,223
Mar-10 07:48 (2021 CR8) 151 22.270 14 46,169,180
Mar-10 09:48 535844 (2015 BY310) 197 21.700 7 5,429,583
Mar-10 11:42 (2021 CF6) 75 23.790 8 1,611,273
Mar-10 12:58 (2011 AH3) 541 19.500 8 67,369,216
Mar-10 14:31 (2021 DT1) 99 23.180 15 13,407,784
Mar-10 15:36 (2015 OH) 457 19.870 7 59,432,570
Mar-10 15:44 (2002 RS129) 116 22.850 9 35,282,286
Mar-10 16:17 (2021 CO5) 55 24.450 5 14,705,163
Mar-10 16:50 (2019 YA3) 25 26.200 6 25,678,973
Mar-10 17:37 (2020 UY6) 188 21.800 12 11,639,560
Mar-10 17:42 475016 (2005 UO) 164 22.100 24 27,366,600
Mar-10 19:29 (2012 EO3) 108 23.000 17 21,968,142
Mar-10 22:09 (2020 XD7) 36 25.400 3 11,962,413
Date Name Diameter Magnitude Km/s Distance
Mar-10 22:16 (2004 PJ2) 226 21.400 18 51,520,052
Mar-10 22:31 (2020 FM) 68 24.000 13 6,961,627
Mar-11 05:00 271480 (2004 FX31) 1,348 17.520 17 13,858,903
Mar-11 12:11 (2020 XK7) 517 19.600 16 18,151,676
Mar-11 12:15 (2015 TT238) 52 24.600 10 42,521,574
Mar-11 13:15 (2020 DO) 17 27.000 16 66,172,793
Mar-11 17:04 (2020 VB) 103 23.100 16 65,148,884
Mar-12 01:32 (2017 BU93) 103 23.100 13 69,295,191
Mar-12 01:43 (2021 CG3) 120 22.780 6 22,127,307
Mar-12 02:59 (2013 FY7) 136 22.500 9 55,312,467
Mar-12 05:20 (2018 VZ6) 28 25.900 11 45,443,472
Mar-12 08:03 (2018 PM28) 31 25.700 14 61,107,267
Mar-12 10:50 (2011 YW10) 54 24.500 13 7,599,745
Mar-12 13:14 (2016 HM2) 252 21.160 6 71,702,863
Mar-12 17:21 (2019 OJ3) 71 23.900 26 51,266,537
Mar-12 18:48 (2018 PD9) 14 27.400 5 55,069,734
Mar-12 18:53 (2015 SE) 23 26.400 16 31,763,517
Mar-12 21:14 (2004 EL20) 20 26.700 23 74,654,339
Mar-12 22:45 (2016 AN165) 12 27.700 9 72,098,264
Mar-12 22:48 (2017 FH3) 124 22.700 35 58,692,129
Mar-12 23:52 (2008 HE66) 179 21.900 6 63,127,683
Mar-13 00:46 (2019 FN1) 16 27.100 15 35,772,599
Mar-13 07:22 (2017 SP21) 12 27.800 8 10,835,086
Mar-13 18:10 (2015 HP1) 59 24.300 7 43,198,152
Mar-13 18:30 (2021 CF4) 196 21.710 20 27,141,520
Date Name Diameter Magnitude Km/s Distance
Mar-13 21:48 (2000 PE3) 335 20.540 14 34,589,678
Mar-14 02:39 (2021 CN7) 119 22.790 13 23,619,868
Mar-14 06:17 (2019 DS1) 33 25.600 20 57,740,499
Mar-14 07:57 (2020 TS) 49 24.700 17 59,136,885
Mar-14 13:48 (2017 FK101) 118 22.800 7 66,695,814
Mar-14 15:28 (2018 CC14) 136 22.500 9 9,320,486
Mar-14 18:51 (2021 CC3) 47 24.790 7 16,783,451
Mar-14 20:19 483656 (2005 ES70) 75 23.800 12 8,345,310
Mar-14 22:49 (2021 CE10) 144 22.370 21 31,674,109
Mar-15 02:07 (2010 PU66) 149 22.300 25 71,019,781
Mar-15 08:07 (2016 AH164) 5 29.700 7 50,832,595
Mar-15 09:07 (2020 BZ) 16 27.100 8 48,525,291
Mar-15 09:37 (1998 BY7) 219 21.470 12 22,771,323
Mar-15 13:10 (2021 CX8) 63 24.180 7 6,958,780
Mar-15 14:02 (2017 US1) 94 23.300 8 72,376,859
Mar-15 18:02 (2021 BE1) 94 23.300 5 27,484,189
Mar-16 00:04 (2015 AJ44) 149 22.300 18 23,426,694
Mar-16 04:18 (2019 FM2) 325 20.610 15 60,611,788
Mar-16 05:46 317643 (2003 FH1) 985 18.200 17 36,160,622
Mar-16 05:53 (2019 JN2) 31 25.700 6 36,885,853
Mar-16 06:03 (2010 NG1) 358 20.400 18 48,308,907
Mar-16 07:28 (2018 BQ) 31 25.700 17 66,120,980
Mar-16 10:42 (2017 EE23) 197 21.700 26 65,796,362
Mar-16 13:28 (2018 RF6) 43 25.000 14 19,904,298
Mar-16 15:01 (2010 WS) 45 24.900 9 11,616,480
Date Name Diameter Magnitude Km/s Distance
Mar-16 15:36 (2021 DT) 41 25.100 7 6,995,689
Mar-16 17:24 (2001 SQ3) 178 21.920 16 11,423,925
Mar-16 17:37 (2019 RB1) 94 23.300 19 22,886,171
Mar-16 18:10 390725 (2003 HB) 494 19.700 9 51,970,016
Mar-17 00:56 (2004 FP4) 103 23.100 18 64,656,937
Mar-17 04:13 (2002 XQ40) 142 22.400 10 67,373,723
Mar-17 05:54 (2021 AV7) 730 18.850 19 41,292,522
Mar-17 06:29 (2016 EF27) 94 23.300 14 68,432,740
Mar-17 11:28 (2011 OX17) 358 20.400 21 61,734,081
Mar-17 12:54 (2021 CL5) 42 25.040 4 16,789,628
Mar-17 19:19 (2017 HX) 62 24.200 27 73,473,448
Mar-17 19:44 (2016 FF12) 25 26.200 12 14,121,276
Mar-17 19:53 (2020 UW1) 68 24.000 10 58,330,665
Mar-17 20:15 (2020 TM6) 26 26.100 8 34,806,873
Mar-17 20:40 (2020 TH5) 259 21.100 8 15,011,674
Mar-17 20:46 (2016 GG216) 103 23.100 14 67,959,420
Mar-17 21:31 6037 (1988 EG) 768 18.740 9 68,766,799
Mar-17 21:46 (2020 RU7) 37 25.300 6 21,772,537
Mar-18 01:48 (2015 TH145) 387 20.230 18 10,166,038
Mar-18 01:54 (2018 FV4) 75 23.800 16 51,181,171
Mar-18 03:45 (2020 YC3) 380 20.270 19 59,216,403
Mar-18 13:45 (2014 SF304) 15 27.300 7 67,089,397
Mar-18 17:46 (2020 TO1) 82 23.600 13 36,603,350
Mar-18 19:24 (2018 BB) 43 25.000 20 65,471,240
Mar-18 23:48 (2017 QP2) 37 25.300 12 21,018,561
Date Name Diameter Magnitude Km/s Distance
Mar-19 00:08 (2016 JV5) 94 23.300 12 28,042,880
Mar-19 01:59 (2018 FM3) 16 27.200 13 54,124,569
Mar-19 07:48 (2020 JE1) 49 24.700 6 45,344,222
Mar-19 07:52 (2020 EX) 171 22.000 31 72,053,424
Mar-19 15:03 357618 (2005 EM30) 651 19.100 31 54,956,481
Mar-19 17:51 (2015 FE37) 411 20.100 40 65,608,564
Mar-20 02:48 (2017 SG14) 375 20.300 26 12,835,503
Mar-20 04:56 (1998 FL5) 236 21.300 15 34,114,725
Mar-20 08:27 (2017 FY64) 130 22.600 32 21,559,272
Mar-20 10:52 (2002 FT5) 179 21.900 15 24,564,751
Mar-20 12:26 (2020 UE2) 21 26.600 7 38,058,118
Mar-20 12:42 (2019 OR1) 271 21.000 17 67,362,843
Mar-20 12:44 (2011 JY1) 52 24.600 9 29,157,689
Mar-20 13:53 (2015 YN10) 342 20.500 18 64,576,231
Mar-20 18:36 (2015 DK200) 33 25.600 7 9,382,780
Mar-21 00:26 (2015 TG144) 33 25.600 16 44,810,346
Mar-21 01:32 23187 (2000 PN9) 2,714 16.000 37 51,780,064
Mar-21 03:51 (2016 EH1) 130 22.600 8 30,640,418
Mar-21 04:29 (2013 FA8) 271 21.000 24 24,485,957
Mar-21 05:15 (2015 GW12) 71 23.900 7 35,819,156
Mar-21 05:58 265661 (2005 UB) 2,058 16.600 25 69,439,909
Mar-21 10:12 (2018 FW3) 24 26.300 8 39,298,344
Mar-21 11:55 (2019 AQ8) 71 23.900 4 64,854,072
Mar-21 14:22 (2020 HX3) 16 27.200 11 69,795,692
Mar-21 16:03 231937 (2001 FO32) 1,240 17.700 34 2,016,395
Date Name Diameter Magnitude Km/s Distance
Mar-21 16:52 474611 (2004 SB56) 622 19.200 13 60,856,905
Mar-21 17:47 (2017 FK91) 284 20.900 27 40,153,089
Mar-21 19:46 (2017 RM16) 14 27.500 22 70,798,532
Mar-22 03:25 (2018 HO) 20 26.700 6 13,558,105
Mar-22 04:08 (2015 BY512) 226 21.400 27 55,689,793
Mar-22 04:41 (2020 TH1) 47 24.800 15 52,986,780
Mar-22 05:06 (2018 JA1) 31 25.700 4 51,778,348
Mar-22 09:57 (2020 TL10) 130 22.600 7 60,009,840
Mar-22 11:25 (2003 YS17) 197 21.700 9 47,053,948
Mar-22 13:05 (2017 FT) 75 23.800 14 47,405,060
Mar-23 00:08 (2020 UB5) 45 24.900 3 19,324,675
Mar-23 02:46 310442 (2000 CH59) 461 19.850 21 41,288,341
Mar-23 05:14 (2015 FA118) 541 19.500 18 56,604,027
Mar-23 09:47 (2002 EC3) 230 21.360 14 14,062,572
Mar-23 09:50 (2018 TD3) 16 27.200 17 13,784,266
Mar-23 12:48 (2006 CT) 156 22.200 7 53,147,230
Mar-23 12:58 (2017 GL6) 103 23.100 12 22,490,697
Mar-23 18:09 (2019 VT2) 59 24.300 7 31,090,417
Mar-23 20:03 (2020 EF) 25 26.200 14 49,863,736
Mar-24 00:27 (2014 UR) 21 26.600 7 22,608,865
Mar-24 01:41 (2020 SN3) 4 29.950 5 36,220,554
Mar-24 01:43 (2004 UT1) 21 26.600 7 33,178,331
Mar-24 02:35 325102 (2008 EY5) 411 20.100 23 42,626,717
Mar-24 03:15 351545 (2005 TE15) 494 19.700 11 10,179,262
Mar-24 05:16 (2005 QG88) 358 20.400 21 44,622,062
Date Name Diameter Magnitude Km/s Distance
Mar-24 08:10 (2001 FO127) 14 27.500 18 71,788,951
Mar-24 09:49 (2014 CS) 455 19.880 2 71,488,595
Mar-24 10:05 (2021 BA1) 126 22.660 5 16,128,197
Mar-24 17:19 (2014 GT34) 197 21.700 20 48,516,747
Mar-25 00:28 277810 (2006 FV35) 193 21.740 10 55,534,557
Mar-25 09:45 (2008 EA9) 12 27.700 13 58,495,117
Mar-25 12:39 497232 (2005 EF) 312 20.700 17 57,531,615
Mar-25 16:34 (2010 FK) 75 23.800 14 54,284,490
Mar-25 18:52 (2016 EA158) 259 21.100 34 51,622,370
Mar-25 18:52 (2017 EW2) 94 23.300 6 28,356,246
Mar-25 22:32 (2019 GY5) 31 25.700 39 55,079,905
Mar-25 22:37 (2015 DR215) 351 20.440 22 57,908,555
Mar-26 01:41 (2009 PY) 247 21.200 19 60,664,670
Mar-26 10:50 136635 (1994 VA1) 682 19.000 3 48,446,109
Mar-26 18:26 (2019 SF9) 57 24.400 20 67,292,206
Mar-27 01:27 (2020 XA5) 60 24.270 8 53,911,276
Mar-27 03:47 (2011 GR59) 78 23.700 16 51,220,106
Mar-27 04:12 (2021 CX5) 59 24.330 6 2,943,307
Mar-27 04:15 (2007 PB8) 284 20.900 18 68,509,299
Mar-27 07:53 517046 (2013 AA53) 567 19.400 23 69,771,809
Mar-27 16:43 (2020 GE) 10 28.150 2 4,866,220
Mar-28 00:49 (2019 XT2) 23 26.400 17 59,884,021
Mar-28 02:01 (2015 EL7) 124 22.700 15 40,438,864
Mar-28 02:30 (2013 XH22) 25 26.200 19 56,729,079
Mar-28 03:07 12538 (1998 OH) 2,841 15.900 15 48,647,150
Date Name Diameter Magnitude Km/s Distance
Mar-28 05:47 (2009 HS2) 179 21.900 25 17,078,198
Mar-28 08:35 (2009 UE2) 375 20.300 13 15,237,467
Mar-28 09:52 (2007 FC3) 34 25.500 14 22,123,979
Mar-28 11:27 (2015 VT64) 27 26.000 11 46,082,508
Mar-28 12:22 (2014 FN47) 338 20.520 17 51,715,046
Mar-28 13:11 (2018 CS2) 34 25.500 17 50,969,124
Mar-28 13:47 (2020 VB2) 108 23.000 14 69,743,283
Mar-28 18:15 (2018 VH2) 326 20.600 27 24,109,052
Mar-29 02:10 (2006 GB) 359 20.390 14 39,776,427
Mar-29 02:11 (2021 AK3) 226 21.400 13 48,435,107
Mar-29 03:36 (2021 DS) 67 24.030 6 11,905,005
Mar-29 04:13 (2016 UR109) 156 22.200 10 35,897,464
Mar-29 04:19 (2021 DC2) 197 21.700 14 45,603,192
Mar-29 11:32 (2014 EH24) 113 22.900 9 52,798,986
Mar-29 21:06 248590 (2006 CS) 2,155 16.500 35 44,966,462
Mar-29 22:40 (2015 FE345) 118 22.800 7 32,488,216
Mar-30 01:26 (2005 OX) 326 20.600 32 64,326,898
Mar-30 02:13 (2014 MA6) 54 24.500 7 71,442,992
Mar-30 18:22 471241 (2011 BX18) 985 18.200 18 33,240,434
Mar-30 23:40 (2012 KF47) 271 21.000 11 73,297,305
Mar-31 00:49 (2012 VJ38) 9 28.500 7 73,940,489
Mar-31 03:22 (2020 RQ6) 14 27.500 6 42,408,516
Mar-31 11:10 (2020 QP6) 302 20.770 15 35,591,306
Mar-31 11:28 (2016 CZ192) 52 24.600 10 40,345,761
Mar-31 14:48 (2017 FO91) 41 25.100 7 12,421,111
Date Name Diameter Magnitude Km/s Distance
Mar-31 15:05 (2021 AG8) 242 21.250 6 56,656,904
Mar-31 15:14 (2021 CP3) 234 21.320 7 35,452,770
Mar-31 16:15 (2016 FB4) 171 22.000 20 44,511,264
Mar-31 16:39 (2019 GM1) 16 27.100 4 5,774,115
Mar-31 20:04 (2017 TF1) 20 26.700 8 72,849,415
Apr-01 00:59 (2020 WR1) 57 24.400 12 52,645,343
Apr-01 09:53 (2010 FV9) 36 25.400 17 48,172,347
Apr-01 12:03 (2020 XF) 18 26.840 2 17,995,653
Apr-01 12:47 (2019 NK1) 5 29.900 10 14,683,916
Apr-01 16:53 (2019 FS2) 15 27.300 11 27,072,448
Apr-01 17:40 (2021 DX) 55 24.480 4 22,857,961
Apr-01 17:41 (2012 XO134) 68 24.000 25 61,667,833
Apr-01 20:14 (2021 AD7) 549 19.470 3 51,151,210
Apr-01 21:59 (2002 BF25) 141 22.420 7 49,220,366
Apr-01 22:26 (2010 RA91) 87 23.480 5 41,012,177
Apr-02 00:37 (2019 TM3) 13 27.600 11 12,334,190
Apr-02 01:08 (2021 CL10) 271 21.000 13 46,431,598
Apr-02 02:00 (2021 CW5) 160 22.150 5 38,329,355
Apr-02 03:12 (2003 GH21) 226 21.400 15 51,031,177
Apr-02 04:36 (2019 AY13) 130 22.600 12 57,489,339
Apr-02 08:17 (2021 CB9) 44 24.930 4 10,236,534
Apr-02 08:58 (2018 RY7) 57 24.400 8 14,068,906
Apr-02 11:40 216523 (2001 HY7) 326 20.600 21 47,355,344
Apr-02 13:33 (2017 HU2) 28 25.900 11 38,880,253

Last Week

Last 7 Days
Date Name Diameter Magnitude Km/s Distance
Feb-26 04:06 456537 (2007 BG) 517 19.600 10 8,591,416
Feb-26 06:48 (2017 OW67) 193 21.740 17 52,905,790
Feb-26 07:48 (2021 CG9) 101 23.150 11 14,020,899
Feb-26 09:19 (2017 WX13) 57 24.400 7 68,615,448
Feb-26 12:55 (2020 FN3) 58 24.350 5 26,626,324
Feb-26 15:05 (2016 PF8) 236 21.300 20 70,305,875
Feb-26 17:39 (2019 HV3) 68 24.000 14 24,213,768
Feb-26 18:36 (2016 SQ2) 86 23.500 18 68,120,011
Feb-26 18:53 (2010 EJ43) 258 21.110 20 31,479,720
Feb-26 21:09 (2021 AP2) 326 20.600 17 44,461,620
Feb-27 04:37 (2021 CK6) 53 24.560 9 21,870,523
Feb-27 04:43 (2017 SS10) 39 25.200 18 63,205,106
Feb-27 04:52 (2013 UX2) 6 29.200 18 74,732,678
Feb-27 09:18 (2006 VG13) 226 21.400 11 55,546,503
Feb-27 11:37 512245 (2016 AU8) 467 19.820 7 30,755,832
Feb-27 12:51 (2020 RH2) 17 27.000 7 59,024,602
Feb-27 15:59 (2017 GO5) 33 25.600 11 18,957,457
Feb-27 22:14 (2017 QF17) 494 19.700 18 65,708,744
Feb-27 23:34 (2021 DE) 61 24.230 26 1,613,201
Feb-28 00:59 (2014 XB6) 22 26.500 13 37,438,410
Feb-28 02:39 (2021 DM) 26 26.100 10 4,888,866
Feb-28 05:19 (2017 BS6) 103 23.100 14 55,397,956
Feb-28 07:13 (2009 RH) 75 23.800 21 67,274,736
Feb-28 10:57 (2017 UT2) 52 24.600 10 29,601,949
Feb-28 15:42 (2001 CP36) 78 23.700 19 44,654,800
Date Name Diameter Magnitude Km/s Distance
Feb-28 22:49 403039 (2008 AE) 494 19.700 7 37,473,244
Mar-01 01:35 (2021 CC4) 389 20.220 25 66,728,263
Mar-01 07:43 (2019 CR4) 23 26.400 12 11,124,691
Mar-01 08:32 (2014 DF23) 52 24.600 11 23,007,760
Mar-01 12:39 (2014 HB177) 10 28.100 6 44,023,400
Mar-01 15:11 (2018 GD5) 12 27.800 9 31,180,725
Mar-01 15:47 (2019 DZ) 68 24.000 15 46,446,765
Mar-01 17:05 (2011 DW) 115 22.870 14 5,394,803
Mar-01 17:39 (2014 UU56) 8 28.600 7 50,919,205
Mar-01 19:29 (2021 DF2) 76 23.760 3 31,940,661
Mar-01 21:32 (2005 TQ45) 33 25.600 18 57,599,448
Mar-01 23:36 (2014 VC10) 562 19.420 35 47,641,950
Mar-02 00:01 (2011 EH17) 52 24.600 17 3,662,825
Mar-02 02:47 (2021 EE) 27 26.021 17 1,781,364
Mar-02 05:54 (2018 KL2) 197 21.700 10 57,424,934
Mar-02 06:58 (2015 PL57) 31 25.700 12 40,135,439
Mar-02 07:23 (2016 EC195) 247 21.200 9 61,148,170
Mar-02 10:13 (2016 FU12) 18 26.900 8 16,877,844
Mar-02 11:02 (2021 EC) 12 27.763 9 651,386
Mar-02 11:07 (2021 CE9) 40 25.140 7 12,362,905
Mar-02 15:11 (2021 EA) 11 28.000 10 93,810
Mar-02 16:26 (2017 DR109) 13 27.600 12 26,850,523
Mar-02 16:51 (2016 EJ55) 52 24.600 10 14,120,928
Mar-02 17:22 (2020 HN3) 6 29.400 3 20,673,960
Mar-02 18:40 (2019 JD7) 177 21.930 8 48,735,618
Date Name Diameter Magnitude Km/s Distance
Mar-02 19:21 (2015 EF) 19 26.800 20 26,614,249
Mar-02 19:52 (1999 RM45) 494 19.700 20 2,930,107
Mar-03 01:09 (2016 DV1) 48 24.770 18 796,465
Mar-03 04:34 (2020 SP) 16 27.120 4 7,037,485
Mar-03 04:47 (2018 EO4) 90 23.400 12 17,408,340
Mar-03 06:16 (2021 CM8) 55 24.470 8 8,260,025
Mar-03 06:52 (2017 VL1) 22 26.500 19 43,613,017
Mar-03 09:30 (2016 EB85) 179 21.900 10 66,191,886
Mar-03 12:56 (2021 DE1) 13 27.640 3 1,684,977
Mar-03 15:58 (2010 EB43) 156 22.200 14 16,022,777
Mar-03 16:32 462550 (2009 CB3) 539 19.510 28 11,269,128
Mar-03 18:08 (2021 ED) 41 25.107 15 2,491,168
Mar-03 18:55 225586 (2000 WS67) 858 18.500 20 55,821,516
Mar-03 19:41 (2017 DF38) 27 26.000 16 60,686,572
Mar-03 21:56 (2019 LX5) 22 26.500 11 21,356,739
Mar-04 03:59 (2021 CV2) 81 23.620 8 14,809,140
Mar-04 05:26 86039 (1999 NC43) 2,802 15.930 26 52,462,013
Mar-04 05:54 (2019 YL4) 57 24.400 6 18,846,174
Mar-04 08:10 (2014 DU110) 103 23.100 16 35,635,869
Mar-04 08:59 (2021 DW1) 40 25.180 5 570,133
Mar-04 09:40 (2021 CP2) 102 23.130 8 33,022,808
Mar-04 10:30 539856 (2017 EV2) 275 20.970 14 36,997,687
Mar-04 12:10 (2018 TT) 136 22.500 8 49,926,939
Mar-04 12:38 (2020 TD8) 18 26.900 4 48,069,412
Mar-04 12:48 (2020 FS2) 59 24.300 8 39,635,205
Date Name Diameter Magnitude Km/s Distance
Mar-04 13:13 (2021 CT4) 93 23.320 12 10,438,470
Mar-04 14:55 (2011 CD66) 18 26.900 13 20,984,567
Mar-04 15:33 (2020 BN7) 75 23.800 18 69,631,177
Mar-04 19:09 (2013 UY) 298 20.800 13 55,241,500
Mar-04 20:16 (2021 DA1) 27 26.040 3 12,014,612

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