1969-030A
NASA's Mariner G (Mariner VII) was JPL's M69-2 spacecraft. (M69-1 was a test model, M69-4 was a flight backup). Atlas 5402 was damaged during launch preps on 1969 Feb 14 and replaced by Atlas 5105. M69-3, originally intended for the mission, became Mariner 6 instead and M69-2, with a launch mass of 383 kg, was used for Mariner 7. Launch was at 2222:01 on 1969 Mar 27 from LC36 at Kennedy. Again, the Centaur made a single burn to enter solar orbit without entering Earth parking orbit first. A course correction at 2021(?) on Apr 8 put Mariner VII on course for its Mars encounter. Mariner flew past Mars at 0500:49 on 1969 Aug 5. This flyby was targeted to allow observations of the south polar cap. Mariner 7 was reported as still transmitting on 1970 May 25.
| Mariner 7 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1969 Mar 27 | 2222:01 | Launch by Atlas Centaur | |
| 2224:31 | BECO | ||
| 2224:34 | Booster sep | ||
| 2225:16 | Insulation sep | ||
| 2225:53 | Fairing sep | ||
| 2226:16 | Atlas SECO | ||
| 2226:18 | Atlas sep | ||
| 2226:27 | Centaur MES1 | ||
| 2233:53 | Centaur MECO | 112 x Inf x 31.0 | |
| 2235:28 | Centaur sep | ||
| 1969 Mar 27 | 2239:22 | Solar panels deployed | |
| 2248:04 | Centaur venting | ||
| 1969 Apr 8 | 2022:09 | TCM 8s 4.3m/s | |
| 1969 May 8 | 1527E | Scan plaform unlatched | |
| 1969 Jul 30 | 1407 | Battery problems | |
| 2206 | Loss of signal | ||
| 1969 Jul 31 | 0515 | Reacquired | |
| 1969 Aug 2 | 0906 | Far encounter begins | |
| 1969 Aug 3 | 1544 | Centaur flyby Mars at 637019 km | |
| 1969 Aug 4 | 0615 | Enter Mars sphere | |
| 1969 Aug 5 | 0219 | Near encounter begins | |
| 1969 Aug 5 | 0500:49 | Mars flyby 3430 km | |
| 1969 Aug 6 | 0345 | Leave Mars sphere | |
| 1969 Sep | UVS astronomy obs. | ||
| 1969 Nov 1 | Begin extended mission | ||
| 1970 May 25 | end of tx | ||
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