1973-049A
Mars-5 (3MS No. 53S) entered orbit around Mars successfully in Feb 1974, but after three weeks its main instrument compartment depressurized and the spacecraft fell silent. IKI used a Mars-centric-solar coordinate system with X the Mars-center/Sunline and Y,Z in the plane perpendicular to it.
| Mars-5 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1973 Jul 25 | 1855:48 | Launch by Proton-K | KB |
| 1858 | Stage 1 sep | ||
| 1901 | Stage 2 sep | ||
| 1905 | Stage 3 MECO | ||
| 1905 | Stage 3 sep | ||
| 1909 | Blok-D MES-1 | ||
| 1911? | Blok-D MECO-1 | ||
| 1973 Jul 25 | 2015 | Blok-D burn 2, solar orbit | |
| 2021? | Blok-D MECO-2 | ||
| 2021? | Blok-D sep | ||
| 1973 Aug 3 | TCM 4.5m/s | ||
| 1974 Feb 2 | TCM 6.8m/s | ||
| 1974 Feb 12 | 1544:25 | KDU burn MOI, 1.188 km/s | |
| Mars orbit insertion | |||
| 1760 x 32560 x 35.3 | |||
| Peri at lat -35 deg, LT = 1700 | |||
| 1974 Feb 18 | Airglow spectrometer activated | ||
| 1974 Mar 1 | End of transmissions | ||
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