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#c0wepc5

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Revesdespace<p>☄️ Un astéroïde potentiellement dangereux est rentré dans l'atmosphère au-dessus de la région sibérienne vers Olyokminsk le 3 décembre vers 16h15 UTC. Cet astéroïde nommé <a href="https://universeodon.com/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a>, de 70 cm environ de diamètre n'avait été découvert que 12 heures avant l'impact par le Kitt Peak National Observatory en Arizona.</p>
Astro Hawk (Ian Kluft) 🚀🛰️<p>"'Spectacular' asteroid blazes over Siberia just hours after it was detected" by <span class="h-card" translate="no"><a href="https://flipboard.com/@LiveScience" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>LiveScience</span></a></span> - <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Asteroid</span></a> <a href="https://spacey.space/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> became a routine monthly fireball. But detecting it before impact was a useful exercise for systems and processes looking for more hazardous <a href="https://spacey.space/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> rocks. <a href="https://www.livescience.com/space/asteroids/spectacular-asteroid-blazes-over-siberia-just-hours-after-it-was-detected" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">livescience.com/space/asteroid</span><span class="invisible">s/spectacular-asteroid-blazes-over-siberia-just-hours-after-it-was-detected</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/bolide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bolide</span></a></p>
Michael Busch<p><a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> is now designated <a href="https://mastodon.online/tags/2024XA1" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XA1</span></a>: <a href="https://minorplanetcenter.net/mpec/K24/K24X68.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">minorplanetcenter.net/mpec/K24</span><span class="invisible">/K24X68.html</span></a>.</p><p>The Minor Planet Center also lists everyone who observed the asteroid before impact.</p><p>The catalogue coincidence may be confusing to some readers, so to emphasize: </p><p>There is _ no _ relationship between <a href="https://mastodon.online/tags/2024XA1" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XA1</span></a> and <a href="https://mastodon.online/tags/2024XA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XA</span></a>.</p>
Michael Busch<p>As well as the ~1 m asteroid <a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> making a bolide today and the ~2 m asteroid <a href="https://mastodon.online/tags/2024XA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XA</span></a> passing by ~1400 km from the surface 2 days ago; the ~15 m asteroid <a href="https://mastodon.online/tags/2024XH" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XH</span></a> will be passing within 1 lunar distance tomorrow: <a href="https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2024%20XH" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ssd.jpl.nasa.gov/tools/sbdb_lo</span><span class="invisible">okup.html#/?sstr=2024%20XH</span></a></p><p>This is a pretty typical week in terms of asteroid flybys.</p><p>They are just particularly easy for current surveys to find near new moons during northern winter.</p>
Joel VanderWerf 🐧<p><span class="h-card" translate="no"><a href="https://mstdn.social/@Free_Press" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>Free_Press</span></a></span> Perhaps that is <a href="https://mastodon.social/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a></p>
Michael Busch<p>There were a couple of cameras close enough to see <a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> flash in the sky, despite there not being many people in that part of the taiga:</p><p><a href="https://bsky.app/profile/meteordoc.bsky.social/post/3lcg3ft5rsc2i" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bsky.app/profile/meteordoc.bsk</span><span class="invisible">y.social/post/3lcg3ft5rsc2i</span></a></p><p>i.e. this is not Chelyabinsk, either in size or in the number of videos available. The videos are from the towns of Lensk and Olyokminsk, which have combined populations of about 35,000 people.</p>
Astro Hawk (Ian Kluft) 🚀🛰️<p>Kudos to EarthSky Science for finding a live webcam pointing the correct direction for people to witness online the predicted <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Asteroid</span></a> <a href="https://spacey.space/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> fireball. This was no different than small asteroid fireballs occurring roughly monthly. Except that it was the 11th asteroid discovered on an impact trajectory, and 4th of 2024. So one third of predicted impacts were this year. We're getting better at spotting even small rocks coming our way. That's good progress. <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/bolide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bolide</span></a></p>
Michael Busch<p><a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> has now flashed in the sky.</p><p>A satellite flash monitor report will be posted to <a href="https://cneos.jpl.nasa.gov/fireballs/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">cneos.jpl.nasa.gov/fireballs/</span><span class="invisible"></span></a> with some delay.</p><p>Eyewitness reports from the ground may be available at <a href="https://fireballs.imo.net/members/imo_view/browse_events" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">fireballs.imo.net/members/imo_</span><span class="invisible">view/browse_events</span></a>.</p><p>For infrasound reports, refer to experts like @pgbrown2.bsky.social : <a href="https://bsky.app/profile/pgbrown2.bsky.social" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bsky.app/profile/pgbrown2.bsky</span><span class="invisible">.social</span></a> .</p><p>Addendum: @meteordoc.bsky.social is sharing video reports - <a href="https://bsky.app/profile/meteordoc.bsky.social" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bsky.app/profile/meteordoc.bsk</span><span class="invisible">y.social</span></a></p>
Astro Hawk (Ian Kluft) 🚀🛰️<p>"Small asteroid to hit Earth’s atmosphere over Siberia today" by EarthSky - <a href="https://spacey.space/tags/Asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Asteroid</span></a> <a href="https://spacey.space/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> expected to harmlessly impact/airburst over Russia at 1615UTC (in 10 minutes). <a href="https://earthsky.org/space/small-asteroid-to-hit-earths-atmosphere-over-siberia-russia-dec-3-2024/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">earthsky.org/space/small-aster</span><span class="invisible">oid-to-hit-earths-atmosphere-over-siberia-russia-dec-3-2024/</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://spacey.space/tags/LowFlyingRocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LowFlyingRocks</span></a> <a href="https://spacey.space/tags/bolide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bolide</span></a></p>
Michael Busch<p>As new observations of <a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> come in, the projected impact time has changed by some minutes and the projected impact location by some tens of kilometers.</p><p>Once the infrasound and flash monitors record the flash, all of the observations can be reconciled to give the location of meteorites.</p>
Michael Busch<p>Objects like <a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> impact Earth harmlessly on a monthly basis; and fly by on a weekly basis (as <a href="https://mastodon.online/tags/2024XA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2024XA</span></a> demonstrated 2 days ago).</p><p>If you are wondering why both of these were found:</p><p>New moon was on December 1. The skies are dark.</p><p>If you are wondering why so many asteroids impact over the Pacific and over Siberia:</p><p>They are large targets.</p>
Michael Busch<p>New impactor:</p><p>The small asteroid <a href="https://mastodon.online/tags/C0WEPC5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C0WEPC5</span></a> will flash in the sky over eastern Siberia, near longitude 118.6º E and latitude 60.8º N, at 2024 December 3 16:22 UTC (two hours from this writing).</p><p>35 observations have been reported so far: <a href="https://cneos.jpl.nasa.gov/scout/#/object/C0WEPC5" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">cneos.jpl.nasa.gov/scout/#/obj</span><span class="invisible">ect/C0WEPC5</span></a> , <a href="https://groups.io/g/mpml/topic/new_upcoming_impactor/109896806" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">groups.io/g/mpml/topic/new_upc</span><span class="invisible">oming_impactor/109896806</span></a></p>
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