Re: Re-entry over Belgium Jan 21 13h21m30s UT?

From: Bob Christy via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 22 Jan 2022 23:29:41 +0000
The location given is where surviving debris was predicted to reach 10 km altitude. In practical terms it's the approximate start of an ellipse where surviving fragments might hit the ground.

It also has an error bound of +/-1 minute or +/-430 km.

Atmospheric entry would have been some distance before that point - ie to the west, making it consistent with the observations.

I've put a rough diagram here
https://www.zarya.info/Diaries/blog/tracks.php?event=Starlink%201204%20Re-entry

Robert Christy

> On 22 Jan 2022, at 22:11, Chris Steyaert via Seesat-l <seesat-l_at_satobs.org> wrote:
> 
> Karl, no doubt it is Starlink-1204.
> 
> The entry location below is rather far to the east. There were several fragments and there can be 100 km difference between the first and the last.
> 
> It appeared in the upward beam of the VVS beacon at Ypres (50.8 2.9) and the BRAMS one at Dourbes (50.1 4.6)
> 
> 
>        Thanks,
> 
>        Chris
> 
> 
> At 22:13 22/01/2022, Karl Antier via Seesat-l wrote:
>> Dear Chris, I guess it could be Starlink-1204, which reentered today at position lat. = 51,2° ; lon. = 7,2° http://www3.satview.org/spacejunk.php?versao=classica&sat_id=44268U Hope this helps! Best regards, Karl Le 22/01/2022 à 15:14, Chris Steyaert via Seesat-l a écrit : > Karl's recent post and the subsequent discussion led me to Bob's > zarya.info page. Interesting, should have used it before. > > Here is the next challenge. Several observers of the Belgian meteor > beacons (49.99 and 49.97 MHz) observed a 'special' forward scatter > reflection. It is not a meteor: the speed estimated by the slope of > the head echoes (up to 6 fragments) is way too low. > > Any information is welcome. > > >     Thanks, > >     Chris  for the VVS radio astronomy section > > > About the attached 'spectrogram': > - a regular fairy strong meteor at 13h20m30s > - direct reception of the carrier is faintly seen at 760 Hz at the > beginning > - the 'S' shaped curve from 13h20m to 13h23m is a plane >
> 
> 
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Received on Sat Jan 22 2022 - 17:30:47 UTC

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