Decay watch: February 28

Alan Pickup (alan@wingar.demon.co.uk)
Sun, 28 Feb 1999 16:25:07 +0000

Today's launch of Raduga 104 has left the usual suspects in decaying
orbits. The current elsets for the payload and the Blok-DM stage are:
Raduga 104                                       36811 x 36488 km
1 25642U 99010A   99059.52238556 -.00000072  00000-0  00000-0 0    21
2 25642   1.6505 228.2637 0037613 214.8267 351.2842  0.97281989    06
Radg 104 Blok-DM r                               36504 x 35661 km
1 25645U 99010D   99058.92130837 -.00000067  00000-0  00000-0 0    13
2 25645   1.1991 220.9020 0099317  11.1967 347.8164  0.99236382    09

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Object: #25643 = 99- 10 B = Raduga 104 Proton r

Decay prediction:
Source   Prediction made    Predicted decay at      Latitude Longitude
               UTC                UTC                  deg      deg

SpaceCom   Feb 28 12:08     Mar  3 03:48 +-2d        32.5 N    23.4 E

SatEvo     Feb 28 16:15     Mar  3 00:00 +-15h 

Latest elset:
Radg 104 Proton r                                192 x 189 km
1 25643U 99010B   99059.58807448  .01723568  12147-4  34152-3 0    63
2 25643  51.6409 224.6253 0002297 295.8172  64.2708 16.30774580    70

SatEvo predicted elsets (based on the latest elset only):
Radg 104 Proton r                                188 x 185 km
1 25643U 99010B   99060.01679083  .02028826  28333-2  34191-3 0 90065
2 25643  51.6405 222.2312 0002130 297.6027  62.3756 16.32375450   146
Radg 104 Proton r                                182 x 179 km
1 25643U 99010B   99060.50620597  .02560505  38539-2  34315-3 0 90067
2 25643  51.6398 219.4908 0001910 299.6466  60.3344 16.34602952   222
Radg 104 Proton r                                173 x 171 km
1 25643U 99010B   99061.05588697  .03479548  80679-2  32546-3 0 90065
2 25643  51.6389 216.4009 0001610 301.9512  58.0331 16.37863921   315

Note: This enters eclipse while southbound near 49 deg S latitude at
~20h local time. Eclipse exit occurs northbound near 23 deg N at ~5h.
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Object: #25644 = 99- 10 C = Raduga 104 Proton platform

Decay prediction:
Source   Prediction made    Predicted decay at      Latitude Longitude
               UTC                UTC                  deg      deg

SpaceCom   Feb 28 11:16     Feb 28 21:49 +-7h        48.9 N   163.7 E

SatEvo     Feb 28 16:00     Feb 28 20:45 +-3h        11.4 S    57.2 W         

Latest elset:
Radg 104 Proton plat                             184 x 176 km
1 25644U 99010C   99059.58810190  .14634605  12273-4  19504-2 0    39
2 25644  51.6327 224.6243 0006148  77.0628 283.1413 16.34612523    71

SatEvo predicted elsets:
Radg 104 Proton plat                             179 x 171 km
1 25644U 99010C   99059.64917322  .17225398  19789+0  18447-2 0 90037
2 25644  51.6322 224.2812 0005576  77.3188 282.7435 16.36609951    85
Radg 104 Proton plat                             172 x 165 km
1 25644U 99010C   99059.71018783  .22708692  44981+0  18491-2 0 90038
2 25644  51.6315 223.9374 0004901  77.5754 282.4794 16.38999722    94
Radg 104 Proton plat                             162 x 157 km
1 25644U 99010C   99059.77109638  .36024660  12890+1  19111-2 0 90030
2 25644  51.6306 223.5927 0003994  77.8326 282.2121 16.42435653   100
Radg 104 Proton plat                             141 x 138 km
1 25644U 99010C   99059.83182418 1.34586133  24435+2  15566-2 0 90030
2 25644  51.6289 223.2467 0002375  78.0908 281.9358 16.49994869   112

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Object: #23907 = 96- 29 B = NOSS 2-3 Titan r

Decay prediction:
Source   Prediction made    Predicted decay at      Latitude Longitude
               UTC                UTC                  deg      deg

SatEvo     Feb 27 23:25     Mar  8 18:00 +-2d

Note: Unchanged.
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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/