1992-054A
The second generation Aussat satellites, named Optus after their new owners Optus Communications Pty., used the larger HS-601 bus and were launched by the Chinese CZ-2E rocket from Xichang, with a Star 63F solid perigee kick motor to place them in geostationary transfer orbit. The satellites were originally owned by Hughes HCI, and delivered to Aussat on-orbit.
The first attempt to launch B1 was aborted two seconds after the Chang Zheng (Long March) 2E first stage ignited, and before it left the pad. A month later a new attempt met with success. Optus B1 lost its primary control processor on 2005 May 23. The 601 satellites had a recurrent problem with SCP failures, and by the time of the problem on this first HS-601 the issue was well understood and the satellite quickly resumed operations on the backup processor.
| Optus B1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1992 Jun 26 | 1040 | Launch abort at TIG+2s | XSC |
| 1992 Aug 13 | 2300 | Launch by CZ-2E | XSC |
| T+2:05 Booster CO | |||
| T+2:07 Booster sep 40 km? | |||
| T+2:39 Stage 1 MECO | |||
| T+2:40 Stage 1 sep | |||
| T+3:20 Fairing | |||
| T+7:40 Stage 2 MECO | |||
| 2309 | T+9:33 Stage 2 VECO | ||
| 2310 | T+10:00? Stage 2 sep | ||
| 1992 Aug 14 | 97.13 200 x 1041 x 28.0 | ||
| 1992 Aug 14 | 0102 | Star 63F PKM burn | |
| 0104 | Burnout | ||
| 1992 Aug 14 | 0105? | Star 63F sep | 661.47 350 x 37188 x 23.5 |
| 1992 Aug 16 | 1400? | LAM-1 | 799.24 7064 x 37236 x 10.8 |
| 1992 Aug 20 | 1200? | LAM-2 | 1472.36 35657 x 37329 x 0.4 GEO 163.3E+8.9W |
| 1992 Aug 26 | 1435.85 35661 x 35902 x 0.3 GEO 152.0E | ||
| 1992 Nov 7 | 1436.17 35692 x 35883 x 0.2 GEO 151.7E | ||
| 1992 Nov 9 | mv out | ||
| 1992 Nov 15 | 1434.05 35690 x 35802 x 0.1 GEO 158.1E+0.5E | ||
| 1992 Nov 21 | 1436.04 35769 x 35801 x 0.1 GEO 160.2E | ||
| 1992 Dec 29 | 1436.11 35778 x 35795 x 0.0 GEO 160.0E | ||
| 1994 Apr 15 | 1436.11 35773 x 35800 x 0.0 GEO 160.0E | ||
| 1997 Apr 21 | 1436.10 35769 x 35804 x 0.0 GEO 160.0E | ||
| 1999 Jun 14 | 1436.10 35771 x 35801 x 0.1 GEO 160.0E | ||
| 2005 May 23 | Primary SCP loss | ||
| 2006 Aug 1 | 1436.09 35765 x 35807 x 0.1 GEO 160.0E | ||
| 2006 Aug | end of active inclination control | ||
| 2006 Dec 19 | 1436.10 35762 x 35810 x 0.5 GEO 160.2E | ||
| 2007 Feb | Move to 164E | ||
| 2008 Apr 12 | 1436.04 35767 x 35802 x 1.7 GEO 164.8E | ||
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