Decay watch: May 3
Alan Pickup (alan@wingar.demon.co.uk)
Mon, 3 May 1999 16:20:09 +0100
OIG has restored its feed from SpaceCom...
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Object: #388 = 62- 39 D = FTV 3502 Scout r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Apr 27 00:20 May 3 18:06 +-4d 65.6 N 171.1 W
SpaceCom Apr 29 06:46 May 3 01:51 +-2d 79.5 N 38.4 E
SpaceCom Apr 29 22:12 May 2 22:42 +-2d 36.1 N 132.5 E
SpaceCom Apr 30 20:50 May 2 19:00 +-1d 30.7 S 9.2 E
SpaceCom May 2 01:38 May 2 21:49 +-12h 4.4 N 27.3 W
SpaceCom May 2 09:57 May 2 21:49 +-7h 5.0 N 27.2 W
SpaceCom May 2 15:54 May 2 21:54 +-4h 15.8 S 31.6 W
SpaceCom May 2 19:29 May 2 21:04 +-2h 13.9 S 165.6 E
SpaceCom May 3 02:14 May 2 20:47 +-24m 71.5 S 166.5 W
SatEvo Apr 27 19:45 May 4 00:00 +-2d
SatEvo Apr 29 19:50 May 3 11:00 +-1d
SatEvo Apr 30 19:05 May 3 01:27 +-18h
SatEvo May 1 20:40 May 2 23:58 +-8h 0.0 118.6 E
SatEvo May 3 14:00 May 2 20:48 +-20m 55.3 S 178.4 E
Final elset:
FTV3502 Scout r 1.5 0.5 0.0 6.5 d 155 x 147 km
1 00388U 62039D 99122.75477428 .28493717 34299-5 72256-3 0 7194
2 00388 98.5107 338.1632 0006077 251.4067 108.6000 16.45687328974434
Note: By the epoch of its final elset, this was running 53 seconds
early against the elsets I had posted here on the 1st. My predicted
elset for the beginning of the final orbit is:
FTV3502 Scout r 1.5 0.5 0.0 6.5 d 143 x 137 km
1 00388U 62039D 99122.81551117 .52621484 32730+1 65155-3 0 97192
2 00388 98.5092 338.2459 0004580 251.1580 108.7923 16.49845615974444
SatEvo gives decay just before it crossed northbound over New Zealand,
but is may have survived to reach the equator over Melanesia.
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Object: #22583 = 93- 17 C = GPS 2-19 r1
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom May 1 00:39 May 4 22:14 +-2d 30.0 N 68.2 W
SpaceCom May 2 04:51 May 5 01:43 +-2d 2.9 S 10.4 E
SpaceCom May 3 00:05 May 5 01:28 +-1d 30.4 N 42.8 W
SpaceCom May 3 01:05 May 5 01:25 +-1d 33.1 N 51.9 W
SatEvo Apr 30 19:15 May 4 21:00 +-2d
SatEvo May 1 20:55 May 5 00:55 +-2d
SatEvo May 3 15:00 May 5 00:10 +-9h 0.0 29.1 E
Latest elset:
GPS 2-19 r1 5.9 2.4 0.0 5.0 v 237 x 188 km
1 22583U 93017C 99123.14130124 .03182275 25950-5 10712-2 0 7782
2 22583 36.1398 87.6602 0036871 163.6744 196.5212 16.22569783328690
SatEvo prediction:
GPS 2-19 r1 5.9 2.4 0.0 5.0 v 222 x 181 km
1 22583U 93017C 99123.75578705 .04109265 87612-2 98428-3 0 97789
2 22583 36.1389 83.2377 0031548 169.8652 190.1986 16.26772047328795
GPS 2-19 r1 5.9 2.4 0.0 5.0 v 214 x 176 km
1 22583U 93017C 99124.00108468 .04896769 12986-1 97048-3 0 97783
2 22583 36.1384 81.4639 0028975 172.3483 187.6960 16.28968254328839
GPS 2-19 r1 5.9 2.4 0.0 5.0 v 203 x 170 km
1 22583U 93017C 99124.30718473 .06518981 23579-1 93954-3 0 97780
2 22583 36.1376 79.2415 0025169 175.4594 184.5635 16.32416749328888
GPS 2-19 r1 5.9 2.4 0.0 5.0 v 190 x 162 km
1 22583U 93017C 99124.55152979 .08976550 53023-1 88746-3 0 97782
2 22583 36.1368 77.4584 0021463 177.9555 182.0532 16.36130137328925
Note: The latest elset shows this running 4 seconds early against the
predicted orbital evolution I've posted here over the past two days. I
show a night-time decay while SE-bound over central Africa.
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Object: #8755 = 76- 24 B = Cosmos 808 r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SatEvo Apr 28 21:00 May 9 19:00 +-3d
SatEvo Apr 30 19:10 May 7 23:00 +-2d
SatEvo May 3 15:15 May 8 05:00 +-1.2d
Latest elset:
Cosmos 808 r 3.8 2.6 0.0 5.1 v 228 x 219 km
1 08755U 76024B 99122.67201295 .01028705 -94854-6 60930-3 0 2511
2 08755 81.2125 139.6199 0006435 168.1972 191.9224 16.18540798276895
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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/