1986-019A
Matra built the SPOT 1 satellite for CNES, which launched it aboard an Ariane into sun synchronous polar orbit in Feb 1986.
SPOT 1 was deactivated in 1993, but was to be reactivated in Nov 1996 to make up for the loss of SPOT 3. By this time, the on board tape recorders had failed and data had to be recovered by ground station real time passes.
In 2003, with 54 kg of prop remaining, the satellite's perigee was lowered to decrease its orbital life, with decay expected in 2018. First, the orbit was lowered in two burns by 15 km to avoid collision risks with the other SPOT satellites and position apogee over Toulouse; then a series of burns were made at apogee to lower perigee including a large final depletion burn. The resulting orbit had an estimated lifetime of 18 years. SPOT 1 was then decommissioned.
| SPOT 1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1986 Feb 22 | 0144:35 | Launch by Ariane I | CSG |
| T+2:29 Stage 1 sep | -6260? x 75? x 98 | ||
| T+4:20 Fairing sep | -5800? x 240? x 98 | ||
| T+4:44 St 2 MECO | |||
| T+4:48 Stage 2 sep | -5450? x 320 x 98 | ||
| T+4:54 St 3 MES | |||
| 0158:39 | T+14:04 H8 MECO | ||
| 0159:12 | T+14:37 SPOT sep | ||
| 0202:46 | T+18:11 Viking sep | ||
| 0205 | H8 end of mission | ||
| 1986 Feb 22 | 101.42 823 x 828 x 98.8 | ||
| 1986 Nov 14 | H8 stage explodes | ||
| 1990 Sep | In reserve | ||
| 1992 Mar | Reactivated | ||
| 1992 Oct | Deactivated | ||
| 1993 Apr | Reactivated | ||
| 1993 Jul | Deactivated | ||
| 1993 Sep | 101.41 824 x 825 x 98.71 | ||
| 2003 Nov 6 | 101.40 824 x 826 x 98.67 | ||
| 2003 Nov 17 | Begin 1000s deorbit burns | 800 x 826 x 98.7 | |
| 1309 | 350s burn | ||
| 1413 | 696s burn | 810 x 812 x 98.7 | |
| 2003 Nov 19 | 1000s burn, 5 kg | 783 x 808 | |
| 2003 Nov 20 | 1000s burn | 757 x 808 | |
| 2003 Nov 21 | 1000s burn | 732 x 807 | |
| 2003 Nov 22 | 1000s burn | 708 x 807 | |
| 2003 Nov 24 | 1000s burn | 684 x 806 | |
| 2003 Nov 25 | 1000s burn | 662 x 805 | |
| 2003 Nov 26 | 1000s burn | 640 x 804 | |
| 2003 Nov 27 | 1000s burn | 619 x 804 x 98.7 | |
| 2003 Nov 28 | 2023 | Depletion 2400s, 8.4 kg | |
| 2103 | End of burn | ||
| 2003 Nov 30 | end of ops | ||
| 2003 Dec 4 | 98.64 584 x 803 x 98.7 | ||
| 2004 Jul 22 | 98.63 584 x 801 x 98.7 | ||
Payload:
- HRV /Imaging CCD cameras (2) 0.5-0.59,0.61-0.68,0.79-0.89mu 20m resolution
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