Re: CB Obs March 13, 2017 part 1: USA 28888 recovered

From: Marco Langbroek via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 14 Mar 2017 00:31:36 +0100
Op 13-3-2017 om 19:52 schreef C. Bassa via Seesat-l:

> 1) Propagating the old elements and fitting for mean anomaly, RA of
>    ascending node and argument of perigee gives this orbit which can
>    be used for searching:
> 
> 1 28888U 05042A   17072.78505787  .00000000  00000-0  00000-0 0    02
> 2 28888  96.8903 112.9414 0127290 117.7214 332.3376 15.77085616    00
> # 20170313.78-20170313.78, 9 measurements, 0.005 deg rms


Fitting to match past typical perigee and apogee altitudes, here is an
alternative guess:

USA 186*                                                 260 x 455 km
1 28888U 05042A   17072.76944441 0.00030188  00000-0  13200-3 0    03
2 28888  96.8960 112.9183 0144821 107.7645 253.9483 15.70421662    07

rms 0.01

This would lead to a pass some 6 minutes later for tomorrow (early European
evening) compared to Cees' elset.

- 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 Mon Mar 13 2017 - 18:32:20 UTC

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