1981-100A
SME was a project operated by the University of Colorado to study the mesosphere and the ozone layer. The mission was managed by JPL. The satellite, built by Ball Aerospace, was launched at 1127 on 1981 Oct 6 by a Delta 2310 from Vandenberg and reached a 95.45min, 536 x 540 km x 97.5 deg sun-synchronous (3am/3pm local time) orbit at 1135. The Delta stage made a second burn to a higher orbit.
SME operated until around Dec-1986 and reentered on 1991 Mar 5. The satellite generated a database of nitric oxide density profiles. One reference says that instruments were switched off in Dec 1988, but available science data runs only to Dec 1986 so I suspect a typo.
| SME | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1981 Oct 6 | 1127 | Launch by Delta 2310 | V |
| T+0:38 SRM burnout | |||
| T+1:45 SRM sep | |||
| T+3:48 MECO | |||
| T+3:56 St 1 sep | |||
| T+4:03 SES-1 4:32 | |||
| 1135 | T+8:35 SECO-1 | ||
| 1221 | T+54:53 SES-2 4.56s | ||
| 1221 | T+54:58 SECO-2 | ||
| Spinup | |||
| 1226 | T+59:10 SME/Delta sep | 95.45 536 x 540 x 97.5 | |
| Retro burn | |||
| 1228 | T+1:01:25 Uosat/Delta sep | ||
| 1257? | SES-3 depletion | ||
| 1257? | SECO-3 | 554 x 2752 x 99.9 | |
| 1981 Oct 7 | 1200? | IR radiometer cover jettison | |
| 1981 Dec 15 | Ozone data begins | ||
| 1982 Jan 6 | N2O4 data begins | ||
| 1986 Dec 11 | N2O4 data ends | ||
| 1986 Dec 15 | Ozone data ends | ||
| 1986 Dec | Decommissioned | ||
| 1991 Mar 5 | Reentered | ||
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