RE: Kosmos 2542/2543 vs USA 245?

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 10 Feb 2020 17:08:16 -0500
Another fine example of hobbyist satellite tracking and orbit analysis. Congratulations to all involved, especially to
Nico for doing the tracking and spotting the Cosmos manoeuvres, and to Michael on the detailed conjunction analyses.

Ted Molczan


> -----Original Message-----
> From: Seesat-l <seesat-l-bounces+ssl3molcz=rogers.com_at_satobs.org> On Behalf Of Michael R
> Thompson via Seesat-l
> Sent: February-10-20 3:17 PM
> To: Michael R Thompson via Seesat-l <seesat-l_at_satobs.org>
> Subject: Re: Kosmos 2542/2543 vs USA 245?
> 
> Well I guess you can't get much higher-level confirmation than that.
> 
> https://time.com/5779315/russian-spacecraft-spy-satellite-space-force/
> 
> Michael
> ________________________________
> From: Seesat-l <seesat-l-bounces+thomp376=purdue.edu_at_satobs.org> on behalf of Michael R
> Thompson via Seesat-l <seesat-l_at_satobs.org>
> Sent: Sunday, February 2, 2020 2:47 AM
> To: SeeSat List <seesat-l_at_satobs.org>
> Subject: Re: Kosmos 2542/2543 vs USA 245?
> 
> Cosmos 2542 made another maneuver on the 31st and is now drifting back towards USA 245.
> Closest approach will be between Feb 7 and 10.
> 
> Have been going into some more detail on Twitter, but based on the most recent observations
> from Nico, it looks like USA 245 may have made a slight adjustment shortly after 2542 sync'd
> its orbit to drift away a bit.  The latest Cosmos maneuver has put it back on a closing
> rate.
> 
> Michael
> ________________________________
> From: Allen Thomson <thomsona_at_flash.net>
> Sent: Friday, January 31, 2020 12:41 PM
> To: Michael R Thompson via Seesat-l <seesat-l_at_satobs.org>; Michael R Thompson
> <thomp376_at_purdue.edu>
> Subject: Re: Kosmos 2542/2543 vs USA 245?
> 
> 
> Makes the news, modestly:
> 
> https://www.thedailybeast.com/why-is-mystery-russian-spacecraft-cosmos-2542-suddenly-
> stalking-a-us-spy-satellite
> 
> 
> 
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Received on Mon Feb 10 2020 - 16:09:49 UTC

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