1971-051A
Mariner IX, the MM71-2 (Mariner 71I, Mariner I) payload, was launched at 2223 on 1971 May 30 by Atlas Centaur from Cape Kennedy in a single burn direct ascent trajectory on azimuth 92.7 deg to solar orbit. There was one course correction, on 1971 Jun 7. Mars orbit insertion was on Nov 14; planned orbit was 1200-1500 km periapsis, 12 h period, 65 deg inc.
Mariner IX mapped the planet until 1972 Apr 2. It was reactivated on 1972 Jun 4 and transmitted until 1972 Oct 27. The Mariner IX mission gave us the first detailed look at the planet Mars in its entirety.
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| Mariner 9 |
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| Date | Time | Event | Orbit |
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| 1971 May 30 | 2223:04 | Launch by Atlas Centaur |
| | 2225:34 | T+2:30 BECO |
| | | Atlas MECO |
| | 2227? | Atlas sep |
| | 2227? | Centaur MES1 |
| | 2235 | MECO, solar orbit |
| | 2236 | Centaur sep T+13:18 |
| | 2240 | Solar panels deploy |
| 1971 Jun 5 | 0022:00 | TCM, 5s burn 6.7m/s |
| 1971 Nov 14 | | Centaur miss by 30000 km |
| 1971 Nov 14 | 0017:39 | Mars orbit insertion burn, 15:15 1.6005 km/s |
| | 0033:05 | MOI | 754.01 1398 x 17915 x 64.36 |
| | 0650? | Apoapsis 1 |
| | 1307? | Periapsis 2 |
| | 1924? | Apoapsis 2 |
| 1971 Nov 15 | 0141? | Periapsis 3 |
| | 0758? | Apoapsis 3 |
| | 1415? | Periapsis 4 |
| | 2032? | Apoapsis 5 |
| 1971 Nov 16 | 0237:53 | OTM-1 6s, 15.3m/s | 718.23 1387 x 17094 x 64.4 |
| 1971 Nov 16 | 0249? | Periapsis 5 |
| | 0850? | Apoapsis 6 |
| 1971 Nov 26 | | Recon 1 mapping phase |
| 1971 Dec 15 | | Recon 2 mapping phase |
| 1971 Dec 30 | 1900? | OTM-2, Apo 94 17s 41.8m/s | 719.47 1650 x 16860 x 64.4 |
| 1971 Dec 31 | 0700? | Apoapsis 95 | |
| 1972 Jan 2 | | Cycle 1 mapping |
| 1972 Jan 22 | | Cycle 2 mapping |
| 1972 Feb 10 | | Cycle 3 mapping |
| 1972 Mar 1 | | Special science targeting |
| 1972 Apr 2 | | End of standard mission |
| 1972 Jun 4 | | Reactivated |
| 1972 Oct 27 | | End of transmissions |