Decay watch: June 27
Alan Pickup (alan@wingar.demon.co.uk)
Sun, 27 Jun 1999 20:13:01 +0100
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Object: #16686 = 86- 31 D = Molniya 3-28 r2
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jun 17 01:00 Jun 23 16:44 +-4d 46.6 S 44.7 W
SpaceCom Jun 20 05:29 Jun 24 05:35 +-2d 27.7 S 139.1 E
SpaceCom Jun 21 01:35 Jun 24 05:27 +-2d 56.8 S 102.6 E
SpaceCom Jun 21 08:42 Jun 24 05:17 +-2d 60.9 S 53.9 E
SpaceCom Jun 22 16:51 Jun 24 07:40 +-1d 47.4 S 88.3 E
SpaceCom Jun 23 05:19 Jun 24 05:39 +-15h 60.2 S 84.8 E
SpaceCom Jun 23 05:19 Jun 24 05:39 +-15h 60.2 S 84.8 E
SpaceCom Jun 23 21:52 Jun 24 05:55 +-5h 56.8 S 95.8 E
SpaceCom Jun 27 10:44 Jun 28 10:48 +-5h 35.4 S 36.4 E
SatEvo Jun 17 19:35 Jun 24 00:00 +-2d
SatEvo Jun 20 17:30 Jun 24 09:52 +-1.3d
SatEvo Jun 21 20:20 Jun 24 05:27 +-18h
SatEvo Jun 22 19:55 Jun 24 05:31 +-11h
SatEvo Jun 23 18:40 Jun 24 07:34 +-5h 61.3 S 22.8 E
SatEvo Jun 24 19:15 Jun 27 20:00 +-?
SatEvo Jun 25 22:30 Jun 28 11:55 +-20h
SatEvo Jun 26 19:00 Jun 28 13:39 +-14h
SatEvo Jun 27 18:45 Jun 28 12:01 +-6h 61.6 S 59.2 W
Latest elset (146 sec early against yesterday's prediction):
Moln 3-28 r2 766 x 88 km
1 16686U 86031D 99178.70015046 .33389109 72492-5 27966-3 0 5389
2 16686 61.7288 139.2827 0498180 263.5917 105.7758 15.46454566 85626
SatEvo prediction:
Moln 3-28 r2 677 x 86 km
1 16686U 86031D 99178.89058185 .43143078 13150+0 30417-3 0 95388
2 16686 61.7234 138.5548 0437181 263.6854 91.3189 15.62066933 85650
Moln 3-28 r2 535 x 85 km
1 16686U 86031D 99179.14488244 .58147824 29764+0 33077-3 0 95382
2 16686 61.7150 137.5549 0336553 263.8145 92.3416 15.87298591 85695
Moln 3-28 r2 325 x 82 km
1 16686U 86031D 99179.39445603 1.13772868 19503+1 40779-3 0 95383
2 16686 61.7025 136.5299 0184152 263.9477 93.9509 16.25944488 85733
Moln 3-28 r2 233 x 81 km
1 16686U 86031D 99179.45578292 1.87627828 74258+1 47707-3 0 95383
2 16686 61.6977 136.2673 0116657 263.9820 94.6874 16.43372109 85747
Note: I place decay near perigee on the final SatEvo-predicted orbit
above. SpaceCom (welcome back) place it shortly after the previous
perigee.
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Object: #25670 = 99- 17 B = DSP 19 Titan 4 r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jun 27 10:54 Jul 1 10:37 +-19h 22.2 S 171.6 W
SatEvo Jun 27 18:50 Jul 2 09:07 +-1d
Latest elset:
DSP 19 Titan 4 r 300 x 157 km
1 25670U 99017B 99178.66195038 .01622359 -73473-5 30334-3 0 1422
2 25670 28.6187 67.9412 0108286 277.1324 81.6910 16.16599172 12379
SatEvo prediction:
DSP 19 Titan 4 r 294 x 156 km
1 25670U 99017B 99179.03214957 .01783614 90857-3 30987-3 0 91423
2 25670 28.6185 65.0742 0104721 281.7913 77.0358 16.17904679 12432
DSP 19 Titan 4 r 277 x 152 km
1 25670U 99017B 99180.01784637 .02119647 14250-2 29340-3 0 91423
2 25670 28.6178 57.4129 0094774 294.2409 64.7718 16.21727186 12594
Note: This enters eclipse while northbound near 14 deg N latitude at
around 19:30 local time. Eclipse exit occurs near 25 deg S at 06:00
local time.
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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/