Thursday, December 25, 2003

Westar 6 (Asiasat 1)

 1984-011B / 1990-030A


The Westar 6 satellite was carried into orbit on the Space Shuttle Challenger in Feb 1984. Deployment from the cargo bay was normal, but when the PAM-D upper stage ignited the nozzle failed and the satellite was left in a low elliptical orbit. It was recovered by the 51-A mission. The underwriters, Merritt Syndicates, sold the satellite to Asiasat. Asiasat (the Asia Satellite Telecommunications Co. of Hong Kong) is a consortium of Cable & Wireless, Hutchinson Wampoa and the China International Trust and Investment Corp. (CITIC). Asiasat got Hughes to refurbish the satellite; it was then relaunched from China aboard a CZ-3 rocket, this time reaching GEO successfully. It was used for regional SE Asian communications.


Westar 6 (Asiasat 1) 
 

DateTimeEventOrbit  

1984 Feb 3  2059:23  Westar 6 deploy from OV-099 
1984 Feb 3  2145  PAM-D burn 
1984 Feb 3   PAM-D loss of control 
1984 Feb 3  2146? PAM-D sep  100.0 300 x 1214 x 27.7 
1984 Feb 6    100.02 303 x 1215 x 27.7 
1984 Feb 8    100.02 303 x 1215 x 27.7 
1984 Feb 9    99.94 295 x 1215 x 27.7 
1984 Feb 27    99.89 296 x 1210 x 27.7 
1984 May 5    99.74 305 x 1186 x 27.7 
1984 May 12    99.75 305 x 1187 x 27.7 
1984 May 12  mv up  107.64 357 x 1192 x 27.9 
1984 May 12  1648 AKM fired  107.64 1070 x 1164 x 28.5 
1984 Jul 19    107.64 1070 x 1165 x 28.5 
1984   Ownership to Merritt Syndicates 
1984 Aug 6   mv  106.11 1042 x 1050 x 28.5 
1984 Oct 9    106.11 1042 x 1050 x 28.5 
1984 Oct 11   lower orbit 103.81 820 x 1056 x 28.5 
1984 Oct 12    100.34 490 x 1058 x 28.5 
1984 Oct 13   lower orbit 99.06 370 x 1056 x 28.5 
1984 Oct 14    99.05 364 x 1061 x 28.5 
1984 Oct 16    98.76 352 x 1046 x 28.5 
1984 Oct 18    97.75 354 x 947 x 28.5 
1984 Oct 19    96.96 355 x 867 x 28.5 
1984 Oct 23    95.27 357 x 706 x 28.5 
1984 Oct 27    92.73 352 x 463 x 28.5 
1984 Oct 28    91.72 342 x 375 x 28.5 
1984 Nov 2    91.91 361 x 375 x 28.5 
1984 Nov 14    91.77 353 x 369 x 28.5 
1984 Nov 14   OV-103 rendezvous with Westar 6 
 1232  MMU/Gardner dock Westar  
  RMS grapple Westar 
  MMU undock ACD 
 1327? MMU berthed 
 1442  Base adapter on 
  Westar berthed 
1984 Nov 16   OV-103 landed  
1987 Jun 25 Sold to Asiasat 
1990 Apr 7  1330:02  Launch by CZ-3  XSC 
 1332:09  Stage 1 sep, 50km 
 1334:25  Stage 2 sep 
 1334:25  Stage 3 MES1 
 1341:30  T+11:28 Stage 3 MECO 
 1345:32  Stage 3 MES2 
 1351:29  Stage 3 sep at perigee 
1990 Apr 9  0343? Star 30C burn 
1990 Apr 9    1438.01 34902 x 36745 x 0.3 GEO 130.3E+0.4W 
1990 Apr 14    1456.17 35797 x 36559 x 0.3 GEO 109.1E+4.9W 
1990 Apr 15   On station  GEO 105.5E 
1990 Apr 19    1436.10 35782 x 35790 x 0.2 GEO 105.6E 
1992 Mar 29    1436.16 35776 x 35799 x 0.1 GEO 105.5E 
1994 Feb 10    1436.11 35785 x 35788 x 0.0 GEO 105.5E 
1996 Mar 5    1436.06 35777 x 35794 x 0.0 GEO 105.6E 
1999 Jun 14    1436.15 35785 x 35789 x 0.2 GEO 105.6E 
1999 Jun 17   mv out 
1999 Aug 14 Move in to 122E 
2000 Jun 10    1436.10 35783 x 35790 x 1.0 GEO 122.1E 
2003 Jan 23    1436.28 35784 x 35796 x 3.2 GEO 121.4E

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