Although I updated my Decay Watch page, and sent a corresponding message
to SeeSat, prior to today's decay of Iridium 79, the SeeSat message has
still not made it to the list. I have learned since that the ISP I used
(appropriately, "Blueyonder") is investigating a spate of lost emails :(
Meantime, apologies if it does turn up to confuse you - made even worse
by the fact that it was erroneously dated "Nov 28" rather than Nov 29.
"tum"bling no longer...
Object: #25470 = 98- 51 D = Iridium 79
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Nov 29 07:58 Nov 29 09:52 +-2h 82.8 N 140.6 W
SatEvo Nov 29 19:35 Nov 29 09:23 -10+25m 0.0 79.8 E
Final elset:
Iridium 79 tum 4.0 1.8 0.0 6.0 d 6.0 145 x 135 km
1 25470U 98051D 00334.33051487 .59650537 -58978-6 72949-3 0 8911
2 25470 85.9560 289.1964 0007516 162.9988 197.1061 16.49707638124344
Note: The final elset is very close indeed to the prediction I posted
at 07:30 UTC, based on elsets to 05:01 - it showed the object running
only 0.3 sec late. I estimate that this decayed near the northbound
equator crossing at the end of this orbit. It might have survived a
little longer, but I doubt whether it could have still been in orbit
to sweep southwards across the USA from western Montana at 09:55 UTC
to Phoenix, Arizona, at 09:58. SpaceCom has still to post its final
notice.
Alan
--
Alan Pickup / COSPAR 2707: 55d53m48.7s N 3d11m51.2s W 156m asl
Edinburgh / SatEvo & elsets: http://www.wingar.demon.co.uk/satevo/
Scotland / Decay Watch: http://www.wingar.demon.co.uk/satevo/dkwatch/
*
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This archive was generated by hypermail 2b29 : Wed Nov 29 2000 - 12:05:46 PST