Re: Decay watch: Iridium 69 rocket

Alan Pickup (alan@wingar.demon.co.uk)
Sat, 6 Jun 1998 01:09:36 +0100

The latest published elset for this decaying Long March rocket is:
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            254 x 148 km
1 25321U 98026C   98156.91892650  .03844022 -12848-5  30429-3 0  1228
2 25321  86.3298 276.4941 0080438  30.5942 330.0315 16.26739703  5442

This shows it almost 13 seconds late on the "9115" evolution in my
previous posting.

A new analysis predicts decay at June 7.3 +-0.25d.

SatEvo predicted elsets:

Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            249 x 148 km
1 25321U 98026C   98157.04188869  .04479559  79629-2  33178-3 0 91222
2 25321  86.3294 276.4237 0076742  30.0558 330.3825 16.27848186  5465
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            237 x 147 km
1 25321U 98026C   98157.28761185  .05186677  11538-1  33327-3 0 91223
2 25321  86.3286 276.2827 0068764  28.9774 331.4027 16.30212414  5504
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            224 x 145 km
1 25321U 98026C   98157.53294907  .06279723  20866-1  33385-3 0 91228
2 25321  86.3276 276.1414 0059745  27.8968 332.4223 16.33002964  5549
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            207 x 143 km
1 25321U 98026C   98157.77781691  .08465887  42130-1  33982-3 0 91226
2 25321  86.3264 275.9997 0049119  26.8134 333.4397 16.36549833  5588
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            184 x 138 km
1 25321U 98026C   98158.02204675  .14036460  13599+0  34283-3 0 91225
2 25321  86.3245 275.8574 0035480  25.7263 334.4497 16.41790740  5622
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            167 x 133 km
1 25321U 98026C   98158.14380345  .22403978  39523+0  34683-3 0 91227
2 25321  86.3231 275.7860 0026143  25.1807 334.9466 16.46045533  5649
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            154 x 128 km
1 25321U 98026C   98158.20453912  .34019209  10192+1  36171-3 0 91224
2 25321  86.3220 275.7502 0019910  24.9070 335.1887 16.49358365  5657
Iridm 69 CZ r   10.0  3.0  0.0  4.5 d            131 x 118 km
1 25321U 98026C   98158.26510969  .92380172  92116+1  46969-3 0 91222
2 25321  86.3203 275.7142 0010462  24.6324 335.4174 16.55692816  5662

Alan
-- 
 Alan Pickup | COSPAR site 2707:   55d53m48.7s N   3d11m51.2s W    156m asl
 Edinburgh   | Home:      alan@wingar.demon.co.uk       +44 (0)131 477 9144
 Scotland    | SatEvo satellite page: http://www.wingar.demon.co.uk/satevo/