Decay watch: July 11
Alan Pickup (alan@wingar.demon.co.uk)
Sun, 11 Jul 1999 19:28:17 +0100
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Object: #25779 = 99- 32 C = Iridium 14A CSL02 rocket
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jul 8 19:05 Jul 12 18:48 +-19h 75.6 N 119.2 W
SpaceCom Jul 8 23:06 Jul 12 20:21 +-2d 85.9 N 43.0 W
SpaceCom Jul 9 16:53 Jul 12 20:34 +-2d 35.8 N 17.0 E
SpaceCom Jul 11 04:23 Jul 13 04:51 +-1d 3.2 N 75.2 E
SatEvo Jul 8 22:25 Jul 13 04:56 +-21h
SatEvo Jul 9 19:45 Jul 12 21:33 +-15h
SatEvo Jul 10 18:50 Jul 13 04:56 +-12h
SatEvo Jul 11 17:55 Jul 13 04:47 +-7h 7.3 N 75.5 E
Latest elset (6 sec late against yesterday's prediction):
Irid 14A CSL02r 9.6 3.4 0.0 4.5 d 20 264 x 146 km
1 25779U 99032C 99192.73064748 .04580549 -13275-5 32315-3 0 977
2 25779 86.3565 78.2507 0089891 53.2112 307.9085 16.25312114 4724
SatEvo prediction:
Irid 14A CSL02r 9.6 3.4 0.0 4.5 d 20 250 x 143 km
1 25779U 99032C 99193.03813578 .05853811 12154-1 30925-3 0 90974
2 25779 86.3554 78.0760 0081389 51.8652 308.8656 16.28639376 4772
Irid 14A CSL02r 9.6 3.4 0.0 4.5 d 20 220 x 135 km
1 25779U 99032C 99193.52870633 .08810764 32936-1 25381-3 0 90976
2 25779 86.3529 77.7953 0064305 49.7027 310.8576 16.35596673 4858
Irid 14A CSL02r 9.6 3.4 0.0 4.5 d 20 167 x 120 km
1 25779U 99032C 99194.01651234 .20113686 23212+0 18261-3 0 90972
2 25779 86.3484 77.5123 0036282 47.5241 312.7820 16.48383136 4936
Irid 14A CSL02r 9.6 3.4 0.0 4.5 d 20 116 x 100 km
1 25779U 99032C 99194.19805443 1.20929383 16971+2 29451-3 0 90973
2 25779 86.3446 77.4050 0012410 46.6991 313.4042 16.62014545 4969
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Object: #25376 = 98- 39 A = Cosmos 2359
Decay prediction:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SatEvo Jul 10 18:50 Jul 25 13:00 +-4d
Latest elset:
Cosmos 2359 6.0 2.0 0.0 5.0 d 19.0 237 x 214 km
1 25376U 98039A 99192.55364116 .00427559 72804-5 25554-3 0 8387
2 25376 64.8517 199.5110 0017082 92.9906 267.3224 16.17769677 61140
Note: Thanks to Bjoern Gimle and Kim Pettersson for the heads up about
this Russian Yantar-4KS1 military surveillance satellite. It was last
boosted on June 29 when its orbit was raised from 258x231 km to
265x235 km. This was a smaller boost than usual; on average the four
previous boosts have raised the orbit to ~283x240 km and were executed
when the mean motion increased above 16.1 revs/day. Since then the
orbit appears to have evolved entirely under the influence of drag,
the orbit falling to 237x214 km and the mean motion increasing to
16.18. The decay prediction assumes that there are no further
manoeuvres.
It reaches northern apex near midnight local time and is sunlight
all around its orbit, so is well placed for observation.
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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/