Decay watch: May 30
Alan Pickup (alan@wingar.demon.co.uk)
Sun, 30 May 1999 14:53:39 +0100
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Object: #25745 = 99- 28 B = USA 144 Titan 4 r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom May 24 21:58 Jun 2 11:36 +-5d 63.4 S 94.0 W
SpaceCom May 26 06:28 Jun 1 14:00 +-4d 47.1 N 3.3 W
SpaceCom May 28 11:26 Jun 1 11:29 +-2d 19.2 N 172.6 E
SpaceCom May 29 13:30 Jun 1 13:04 +-2d 6.9 S 161.8 E
SatEvo May 25 12:00 Jun 3 +-3d
SatEvo May 27 19:00 Jun 1 23:00 +-1.4d
SatEvo May 28 21:25 Jun 1 02:43 +-20h
SatEvo May 29 16:20 Jun 1 06:25 +-18h
SatEvo May 30 13:40 Jun 1 07:49 +-12h
Latest elset by Rainer Kracht:
USA 144 Titan 4 r 236 x 182 km
1 25745U 99028 B 99149.87854588 .02060000 00000-0 63350-3 0 07
2 25745 63.4618 73.8155 0040905 168.6487 191.3530 16.23796259 02
SatEvo prediction:
USA 144 Titan 4 r 218 x 173 km
1 25745U 99028 B 99150.80091980 .03210509 54487-2 65609-3 0 90001
2 25745 63.4602 70.1360 0033978 168.6412 191.4357 16.28854450 150
USA 144 Titan 4 r 212 x 170 km
1 25745U 99028 B 99151.04636659 .03669826 71192-2 64736-3 0 90008
2 25745 63.4597 69.1521 0031795 168.6393 191.4326 16.30538451 196
USA 144 Titan 4 r 205 x 167 km
1 25745U 99028 B 99151.29154134 .04306969 11116-1 63571-3 0 90000
2 25745 63.4590 68.1666 0029401 168.6374 191.4291 16.32484018 235
Note: Rainer's elset has this running 14 seconds late against the
prediction I made yesterday.
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Object: #25683 = 99- 20 B = Landsat 7 Delta r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom May 26 20:46 May 30 20:26 +-2d 25.7 S 102.5 W
SpaceCom May 28 19:51 May 30 17:37 +-1d 52.4 S 75.7 W
SpaceCom May 29 23:11 May 30 23:29 +-15h 48.6 S 160.1 W
SpaceCom May 30 09:43 May 30 21:45 +-7h 12.7 N 109.3 W
SatEvo May 25 19:30 Jun 1 00:00 +-1.2d
SatEvo May 26 18:00 May 31 10:00 +-1d
SatEvo May 27 18:00 May 31 09:00 +-0.8d
SatEvo May 28 21:40 May 31 03:50 +-12h
SatEvo May 29 16:40 May 31 03:04 +-9h
SatEvo May 30 13:10 May 31 01:20 +-4h 12.4 S 16.1 E
Latest elset:
Lndst7 Delta r 5.9 2.4 0.0 5.0 d 232 x 128 km
1 25683U 99020B 99150.32737126 .07770615 94783-5 16298-3 0 1393
2 25683 107.5582 278.2527 0079098 243.7408 115.5759 16.34609455 6998
SatEvo prediction:
Lndst7 Delta r 5.9 2.4 0.0 5.0 d 203 x 124 km
1 25683U 99020B 99150.63283545 .12574463 73020-1 17552-3 0 91397
2 25683 107.5561 279.0887 0060970 242.9856 116.3907 16.40916847 7044
Lndst7 Delta r 5.9 2.4 0.0 5.0 d 168 x 115 km
1 25683U 99020B 99150.87619759 .23586594 29505+0 17531-3 0 91397
2 25683 107.5535 279.7613 0040668 242.3778 117.2086 16.49083282 7087
Lndst7 Delta r 5.9 2.4 0.0 5.0 d 155 x 111 km
1 25683U 99020B 99150.93681827 .30246588 40072+0 17066-3 0 91398
2 25683 107.5525 279.9303 0033517 242.2251 117.4346 16.52327245 7090
Lndst7 Delta r 5.9 2.4 0.0 5.0 d 138 x 106 km
1 25683U 99020B 99150.99730535 .47602041 16614+1 18093-3 0 91390
2 25683 107.5512 280.0997 0024446 242.0718 117.6804 16.56764706 7109
Note: The latest elset shows this as only 0.4 second late against my
prediction of yesterday. I predict decay near the end of the final
orbit above, on the approach to an equator crossing at 01:23 UTC at
11.5 deg E. The track continues NNW-wards across N Africa and Spain
at 01:33 UTC. SpaceCom puts decay more than two orbits earlier.
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Object: #20055 = 89- 43 D = Molniya 3-35 r2
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom May 30 09:12 Jun 5 07:36 +-4d 14.4 S 136.3 E
SatEvo May 30 13:30 Jun 3 15:00 +-2d
Latest elset:
Molniya 3-35 r2 6020 x 91 km
1 20055U 89043D 99150.43695388 .28689094 29222-5 10678-2 0 8784
2 20055 63.4531 328.1798 3142004 246.2471 78.6618 9.47552933 56389
SatEvo prediction (the perigee height is uncertain):
Molniya 3-35 r2 5397 x 81 km
1 20055U 89043D 99151.05411339 .40725673 26567-1 80101-3 0 98786
2 20055 63.4493 327.2787 2915398 246.2460 80.6724 9.97279958 56441
Molniya 3-35 r2 4408 x 81 km
1 20055U 89043D 99152.01763603 .50348067 42036-1 84472-3 0 98780
2 20055 63.4420 325.7004 2508914 246.2446 85.5628 10.84329042 56548
Note: My last SatEvo decay list contrived to miss this decayer
altogether :(
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Alan
--
Alan Pickup | COSPAR 2707: 55d53m48.7s N 3d11m51.2s W 156m asl
Edinburgh | Tel: +44 (0)131 477 9144 Fax: +44 (0)870 0520750
Scotland | SatEvo page: http://www.wingar.demon.co.uk/satevo/