SATOBS ML (4353) VIDEO, 10 Aug 2021 (Pt I): USA 224

From: Marco Langbroek via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 11 Aug 2021 14:20:53 +0200
37348 11 002A   4353 T 20210810234247115 17 75 0025062+555020 85
37348 11 002A   4353 T 20210810234248275 17 75 0026588+562780 85
37348 11 002A   4353 T 20210810234250554 17 75 0030389+577370 85
37348 11 002A   4353 T 20210810234251714 17 75 0032425+585080 85
37348 11 002A   4353 T 20210810234254914 17 75 0038478+604880 85

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WATEC 902H2 Supreme + Zeiss 1.4/35 mm + GPS time inserter + ASTRORECORD
What these numbers mean: http://www.satobs.org/position/IODformat.html
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I report these only because AFAIK these are the first optical observations of
USA 224 after it manoeuvered a week ago.

These obs were obtained while the sky clouded over. Stars and the satellite were
seen through clouds, with only a few reference stars visible.

Three framestacks were manually measured in AstroRecord with only a few
reference stars available. The results might therefore not have the usual
astrometric accuracy (beware!). They seem internally consistent in delta T and
x-track error though, so maybe it isn't that bad.

The satellite was some 0.5s early and -0.63 deg x-track on Nico's radio elset
21222.98632200

Use of Nico Janssen's radio orbit is gratefully acknowledged. With the clouded
sky I wouldn't otherwise have been able to capture it.

- Marco


-----
Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
e-mail: sattrackcam_at_langbroek.org

Cospar 4353 (Leiden):     52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
Station (b)log: http://sattrackcam.blogspot.com
Twitter: _at_Marco_Langbroek
-----
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Received on Wed Aug 11 2021 - 07:22:12 UTC

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