1987-018A
NASDA's Marine Observation Satellite, MOS-1, carried radiometers to measure ocean conditions. The satellite was named Momo (Peach or Peach Blossom) once on orbit. It was built by Nippon Electric.
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| Momo |
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| Date | Time | Event | Orbit |
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| 1987 Feb 19 | 0123 | Launch by N-2 | TNSC |
| | | T+0:39 SOB 7-9 on |
| | | T+0:40 SOB 1-6 off |
| | | T+1:19 SOB 7-9 off |
| | | T+1:25 SOB 1-9 sep, 22 km alt |
| | | T+4:31 St 1 MECO |
| | | T+4:37 VECO |
| | | T+4:39 Stage 1 sep at 155 km |
| | | T+4:45 SES-1 at 163 km 384s |
| | 0128 | T+4:53 Fairing |
| | 0134 | T+11:09 SECO-1 411 km | 366? x 910 x 99.1 |
| | 0213 | T+50:58 SES-2 8s 221m/s? |
| | 0214 | T+51:06 SECO-2 |
| | 0215 | T+52:54 MOS/Stage 2 sep | 103.33 911 x 912 x 99.1 |
| | 0220 | T+57:54 SES-3 3s |
| | 0220 | T+57:57 SECO-3 |
| | 0223 | T+1:00:27 SES-4 17s |
| | 0223 | T+1:00:44 SECO-4 | 100.24 636 x 903 x 97.5 |
| 1987 Feb | | OTM |
| 1987 Jun | | Begin operational phase |
| 1987 Jul | | OTM |
| 1987 Jul 28 | | Safemode, attitude anomaly |
| 1987 Dec | | OTM |
| 1988 Apr | | OTM |