Friday, June 2, 2006

Comstar 3

 1978-068A


Comstar D3 (Comstar 203) was Comsat General's third Intelsat 4A class satellite. From 1978 to 1984 it was stationed at 87W; from 1984 to 1986 it was at 76W. The satellite was retired in 1986.


Comstar D3 
 

DateTimeEventOrbit  

1978 Jun 29  2224  Launch by Atlas Centaur  
  T+2:20 BECO 
  T+2:23 Booster sep 
  T+3:05 Insulation panels sep
  T+4:07 SECO
  T+4:09 Atlas sep 
  T+4:19 MES-1 
 2234 T+10:20 MECO-1 189 km Vrel = 7.786 km/s  189 x 1810? x 28? 
 2248 T+24:43 MES-2 559 km Vrel = 7.372 
 2250 T+26:19 MECO-2 627 km Vrel= 9.406 
  
549 x 35919 x 21.83 (MOR)  
 2252 T+28:34 Centaur sep, 807 km 
1978 Jun 30  0600?  Apo 1  
 1600? Apo 2 
1978 Jul 1  0300? Apo 3 
 1300?  Apo 4 
 2330? Apo 5 
1978 Jul 1  2237  AKM firing
1978 Jul 19   1428.11 35474 x 35786 x 0.1 GEO 157.0W+2.0E 
1978 Aug 1    1427.99 35470 x 35783 x 0.1 GEO 117.5W+2.0E 
1978 Aug 24   mv in 1436.17 35782 x 35793 x 0.1 GEO 86.9W 
1979 Jan 4    1436.12 35780 x 35793 x 0.0 GEO 87.0W 
1980 Apr 30    1436.10 35783 x 35790 x 0.1 GEO 86.9W 
1982 Mar 23    1436.11 35783 x 35790 x 0.0 GEO 87.0W 
1984 Jan 1    1436.13 35782 x 35791 x 0.0 GEO 87.0W 
1984 Oct 28    1436.10 35783 x 35790 x 0.0 GEO 87.0W 
1984 Oct 31   mv out of GEO 
1984 Nov 2   mv out 1431.76 35617 x 35785 x 0.1 GEO 83.6W+1.1E 
1984 Nov 23   mv in  1436.13 35785 x 35789 x 0.2 GEO 75.9W 
1985 Sep   Ownership to AT&T;  GEO 76W 
1986 Mar 5    1436.10 35784 x 35788 x 0.0 GEO 76.0W 
1986 May 12    1436.15 35783 x 35792 x 0.2 GEO 76.0W 
1986 May 13   mv out  1438.11 35809 x 35842 x 0.2 GEO 76.0W+0.5W 
1986 May 21   orbit raise 1451.69 36001 x 36181 x 0.2  
1988 Jun 4    1451.70 36006 x 36177 x 2.1 
1992 Jul 10    1451.67 35991 x 36189 x 5.9 

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