Decay watch: Februray 6
Alan Pickup (alan@wingar.demon.co.uk)
Sat, 6 Feb 1999 10:36:51 +0000
SpaceCom decay notices:
Object Notice issued Predicted decay
UTC UTC
#23529 = Intelsat 705 Centaur r Feb 5 22:59 Feb 6 11:20 +-8h
#23529 = Intelsat 705 Centaur r Feb 6 05:30 Feb 6 11:53 +-4h
#22584 = GPS 2-19 r2 Feb 4 06:09 Feb 11 05:45 +-4d
-------------------------------
The latest elset for the Centaur is:
Intelsat 705 Centaur r 403 x 106 km
1 23529U 95013B 99037.34789166 .51968309 -91063-5 59584-3 0 611
2 23529 26.5012 177.5089 0223872 296.3645 61.5221 16.07077578 62176
This shows it running 39 seconds early against yesterday's SatEvo
prediction. I suspect that SpaceCom have the eccentricity too high here
and that a more likely perigee height is 112-116 km.
My latest analysis brings decay forward one rev to February 6.52 (12:33
UTC +-90min). The track just before this takes it almost directly W->E
over Australia, passing ~600 km N of Perth at 12:23 UTC and over
Rockhampton in Queesnland at 12:31.
Predicted elsets, with eccentricity adjusted:
Intelsat 705 Centaur r 333 x 110 km
1 23529U 95013B 99037.40975243 .92164931 15896+1 10842-2 0 90611
2 23529 26.4996 177.0225 0169008 297.1809 61.1063 16.19155913 62188
Intelsat 705 Centaur r 261 x 108 km
1 23529U 95013B 99037.47122110 1.44812242 57489+1 12524-2 0 90611
2 23529 26.4974 176.5312 0115960 298.0057 60.8259 16.33028011 62196
Alan
--
Alan Pickup | COSPAR 2707: 55d53m48.7s N 3d11m51.2s W 156m asl
Edinburgh | Home: alan@wingar.demon.co.uk +44 (0)131 477 9144
Scotland | SatEvo page: http://www.wingar.demon.co.uk/satevo/