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Another screamer 2021 UA1 on Oct 24
#2
Another one of those "Whizzers" that got nabbed after close approach! Apparently, it was picked up by the Zwicky Transit Facility (Palomar Mountain) about 3 hours after it went screaming over my yard (25 Oct 3:06UT), moving 3.6°/minute (3.7'/second), 56° below my horizon in the far south!!

From a location just 17 miles east of me, it appears to have possibly occulted a 10th mag star at 25 Oct 03:06:01.72UT.  If I could have seen thru the Earth.



Phil, see what you get for the RA & DEC if viewing it from 30 28 37.1N 95 15 55.2W at 3:06:01.72UT October 25, 260' elevation. Just curious.

(2021-10-27, 04:01 PM)PMSchu Wrote: We missed another fast mover on the evening of 24 Oct 2021 @2300 EDT. 2021 UA1 was calculated to be moving at 2.95°/sec through Cepheus. Here's a chart in the IA: 

It's moving so fast that ST4 had to include the time to the second on the tick marks & the whole text string didn't fit on the label Cool . What's shown as 2h should be 22h. Minimum Re was 11.1k km.

The osculating elements were downloaded from the MPC's NEAs at Today's Epoch using ST4v on Oct 26.

Talk about a close shave.

Phil S.
Closest I've seen in a very long time!!  14,000Km!
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Another screamer 2021 UA1 on Oct 24 - by PMSchu - 2021-10-27, 04:01 PM
RE: Another screamer 2021 UA1 on Oct 24 - by bigmasterdrago - 2021-10-27, 05:19 PM

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