Decay watch: Mar 8 (NOSS r)

Alan Pickup (alan@wingar.demon.co.uk)
Mon, 8 Mar 1999 21:27:37 +0000

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Object: #23863 = 96- 29 G = NOSS 2-3 Titan r

Decay prediction:
Source   Prediction made    Predicted decay at      Latitude Longitude
               UTC                UTC                  deg      deg

SpaceCom   Mar  2 02:00     Mar  9 18:47 +-5d        62.8 S     8.3 E
SpaceCom   Mar  3 11:47     Mar 10 01:57 +-4d        38.9 S   179.2 E
SpaceCom   Mar  6 07:16     Mar 10 06:14 +-2d         3.1 S    92.0 E

SatEvo     Feb 27 23:25     Mar  8 18:00 +-2d
SatEvo     Mar  1 21:00     Mar  9 16:00 +-2d
SatEvo     Mar  2 19:00     Mar  8 19:00 +-2d
SatEvo     Mar  4 20:15     Mar 10 09:12 +-1.5d       0        44.4 E
SatEvo     Mar  6 18:00     Mar  9 21:23 +-16h        0       135.8 E
SatEvo     Mar  8 19:00     Mar 11 12:49 +-18h       54.7 N    60.2 W

Latest elset:
NOSS 2-3 r       9.8  3.0  0.0  4.8 v            201 x 190 km
1 23863U 96029G   99067.76459806  .02260299  83275-5  54413-3 0   399
2 23863  63.3989 176.5843 0008201   3.3596 356.7812 16.28952518 74261

SatEvo predicted elsets:
NOSS 2-3 r       9.8  3.0  0.0  4.8 v            198 x 188 km
1 23863U 96029G   99068.01007240  .01748988  19257-2  38987-3 0 90397
2 23863  63.3986 175.5986 0007911   3.3624 356.6429 16.29760196 74302
NOSS 2-3 r       9.8  3.0  0.0  4.8 v            193 x 183 km
1 23863U 96029G   99068.50066746  .02095115  28719-2  39084-3 0 90397
2 23863  63.3980 173.6249 0007274   3.3680 356.6368 16.31634778 74380
NOSS 2-3 r       9.8  3.0  0.0  4.8 v            185 x 177 km
1 23863U 96029G   99069.05183628  .02726051  43221-2  39096-3 0 90395
2 23863  63.3972 171.4004 0006430   3.3745 356.6298 16.34260945 74477

Note: The latest elset has it all of 165 seconds late against the 
predictions I posted here two days ago. The drag has increased much 
less than expected; indeed the drag term in an elset issued earlier 
today is the lowest for more than 3.5 days. This cannot be down to the 
transition from free-molecule to slip flow - the rocket is probably 
still too high for this to have a noticeable effect despite its length 
of around 10m.
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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/