Re: JWST Observation at 500000km

From: Nick James via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 1 Jan 2022 08:41:49 +0000
Hi Scott,

I got some astrometry of the spacecraft and upper stage (2021-130 A and 
B) last night:

https://britastro.org/observations/userimg/20220101_083308_d558d7972baf.jpg

The range to the spacecraft is now 687,000 km and it has brightened 
considerably to mag 14.3. The upper stage is around 2 magnitudes 
fainter. From the NASA blog I see that the sunshield was being deployed 
at the time. If it keeps this up it will be around mag 16 when it gets 
to L2.

Nick.


On 29/12/2021 08:24, Scott Tilley via Seesat-l wrote:
> Hi All
> 
> I've managed to find JWST with a 4" SCT at a distance from Earth around 
> 500000km.  JPL Horizons hasn't updated the ephemeris since MCC1b yet but 
> it is pretty close to predicted location.
> 
> Short animation here:
> 
> https://twitter.com/coastal8049/status/1476095156747046912
> 
> COD ScT
> OBS S. Tilley
> COM Long. 123.6685 0 0 W, Lat. 49.4348 0 0 N, Alt. 40m, unknown
> 
> JWST1 C2021 12 29.29245602 06 05 15.7 -00 19 27.6  ScT
> 
> Regards,
> 
> Scott Tilley
> 
> 
> 
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Received on Sat Jan 01 2022 - 02:43:10 UTC

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