Moln 3-28 r2 lasts

Daniel Deak (dan.deak@sympatico.ca)
Thu, 24 Jun 1999 13:34:02 -0400

Hi everybody,

       Molniya 3-28 r2 (#16686) is staying in orbit longer than
everyone anticipated. The last elset from OIG :
SL-6 R/B(2)
1 16686U 86031D   99175.56476269  .18095659  00000-0  46420-4 0  5158
2 16686  61.7420 149.9242 1104500 261.4562  86.0957 14.09154316 85166

Curiously, the drag term (n-dot/2) has been steadily decreasing since yesterday :
SL-6 R/B(2)
1 16686U 86031D   99174.99252520  .38835887  19110-4  43838-3 0  5080
2 16686  61.7439 151.6420 1170110 261.4203  85.3335 13.86536484 85083
SL-6 R/B(2)
1 16686U 86031D   99175.06457371  .23686111  20056-4  29049-3 0  5100
2 16686  61.7403 151.4498 1154427 261.2564  85.5262 13.89682777 85090
SL-6 R/B(2)
1 16686U 86031D   99175.27976839  .20563951  20678-4  25989-3 0  5111
2 16686  61.7459 150.7833 1114541 261.2994  85.7683 13.98771514 85127
SL-6 R/B(2)
1 16686U 86031D   99175.35126488  .18441697  20915-4  24138-3 0  5137
2 16686  61.7485 150.5663 1103292 261.3328  86.0467 14.01169529 85135

Is it normal behaviour for this type of orbit ?

      Last night I tried to see it using Alan's predicted elset :
Moln 3-28 r2                                     1091 x 73 km
1 16686U 86031D   99175.20045012 2.62166313  27577+1  11245-2 0 95033
2 16686  61.6944 150.9932 0731270 262.2395  89.4029 14.95167339 85112
I saw two other sats but not 16686 10 minutes before and after predicted time.
I realized this morning that, using OIG elset, it passed at 05:39 UT instead of
05:23 and was around 20 degrees higher in elevation !

      If it has not decayed by this evening, I will try again tonight.

--
Daniel Deak
St-Bonaventure, Québec

COSPAR site 1745 : 45.9483°N, 72.6539°W, 58 m., UTC-4:00

E-mail : dan.deak@sympatico.ca
French language satellite web site : http://www3.sympatico.ca/dan.deak/