Decay watch: June 20
Alan Pickup (alan@wingar.demon.co.uk)
Sun, 20 Jun 1999 18:38:57 +0100
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Object: #23558 = 86- 17 JE = GFZ 1
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jun 17 00:38 Jun 23 13:22 +-4d 47.6 S 5.3 W
SpaceCom Jun 19 15:53 Jun 23 15:21 +-2d 14.9 N 96.6 E
SatEvo Jun 17 19:30 Jun 23 18:00 +-1.3d
SatEvo Jun 20 17:15 Jun 23 16:44 +-16h
Latest elset:
GFZ 1 0.3 0.0 0.0 11.0 d 180 x 172 km
1 23558U 86017JE 99171.53353399 .01394085 12302-4 15667-3 0 7574
2 23558 51.6189 243.3049 0006081 322.9871 37.0697 16.36210435762870
SatEvo prediction:
GFZ 1 0.3 0.0 0.0 11.0 d 176 x 169 km
1 23558U 86017JE 99172.02191348 .01473252 12037-2 14193-3 0 97572
2 23558 51.6185 240.5556 0005722 325.0406 34.9217 16.37541391762959
GFZ 1 0.3 0.0 0.0 11.0 d 166 x 160 km
1 23558U 86017JE 99173.05825073 .02051837 32086-2 12915-3 0 97573
2 23558 51.6175 234.7019 0004827 329.4132 30.5586 16.41095748763122
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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
SatEvo Jun 17 19:35 Jun 24 00:00 +-2d
SatEvo Jun 20 17:30 Jun 24 09:52 +-1.3d
Latest elset (with too-high drag value):
Moln 3-28 r2 7329 x 77 km
1 16686U 86031D 99171.16417164 .79110148 11716-5 16301-2 0 4756
2 16686 61.7953 158.9104 3596414 259.9602 91.0570 8.57745214 84662
SatEvo prediction:
Moln 3-28 r2 6527 x 77 km
1 16686U 86031D 99171.83385625 .43661179 30457-1 80628-3 0 94754
2 16686 61.7945 158.0304 3331125 260.0691 61.3795 9.11601801 84723
Moln 3-28 r2 5989 x 77 km
1 16686U 86031D 99172.26415264 .47963243 36642-1 82107-3 0 94752
2 16686 61.7939 157.4138 3140478 260.1453 63.5267 9.50970497 84765
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Object: #25786 = 99- 33 B = Astra 1H Proton r
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jun 18 08:32 Jun 19 02:00 +-11h 20.3 S 161.7 W
SpaceCom Jun 19 10:00 Jun 19 22:27 +-8h 26.2 S 108.9 W
SpaceCom Jun 19 16:41 Jun 19 22:23 +-4h 13.6 S 119.7 W
SpaceCom Jun 19 20:12 Jun 19 22:15 +-2h 11.1 N 137.7 W
SpaceCom Jun 20 01:56 Jun 19 22:21 +-2h 6.0 S 125.3 W
SatEvo Jun 20 17:10 Jun 20 01:10 +-2h 0.0 174.0 W
Final elset:
Astra 1H Proton r 161 x 128 km
1 25786U 99033B 99170.77687770 .08387400 12647-4 89690-4 0 167
2 25786 51.5987 292.9597 0025754 273.9519 86.0362 16.48073876 282
Note: SatEvo suggests a later decay than does SpaceCom and it might
have re-entered another orbit later still.
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Object: #25787 = 99- 33 C = Astra 1H Proton platform
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Jun 18 08:03 Jun 19 11:50 +-17h 43.8 N 18.7 W
SpaceCom Jun 18 11:48 Jun 18 17:20 +-4h 37.4 S 8.9 W
SpaceCom Jun 18 14:59 Jun 18 17:28 +-2h 51.1 S 30.7 E
SpaceCom Jun 18 18:34 Jun 18 17:13 +-13m 16.9 S 30.4 W
SatEvo Jun 20 17:00 Jun 18 17:05 +-20m 9.9 S 35.8 W
Final elset:
Astra 1H platform 141 x 123 km
1 25787U 99033C 99169.67952597 .61514717 12859-4 40597-3 0 98
2 25787 51.5910 299.1616 0013875 301.9625 58.0056 16.52666473 107
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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/