Back مارس 7 Arabic Марс 7 Bulgarian Mars 7 Czech Mars 7 German Mars 7 Spanish مریخ ۷ Persian Mars 7 Galician מארס 7 HE मंगल 7 Hindi Marsz–7 Hungarian
 | |
| Mission type | Mars flyby/lander[1] |
|---|---|
| Operator | Soviet space program |
| COSPAR ID | 1973-053A[2] 1973-053D |
| SATCAT no. | 6776[2] 7224 |
| Mission duration | 7 months and 16 days |
| Spacecraft properties | |
| Spacecraft | 3MP No.51P |
| Manufacturer | NPO Lavochkin |
| Launch mass | 3,260 kg (7,190 lb)[2] |
| Landing mass | 635 kg (1,400 lb) |
| Start of mission | |
| Launch date | 9 August 1973, 17:00:17 UTC[3] |
| Rocket | Proton-K/D |
| Launch site | Baikonur 81/24 |
| Contractor | Khrunichev |
| End of mission | |
| Last contact | 25 March 1974[4] |
| Orbital parameters | |
| Reference system | Heliocentric |
| Flyby of Mars | |
| Spacecraft component | Bus |
| Closest approach | 9 March 1974 |
| Mars flyby (failed landing) | |
| Spacecraft component | Lander |
| Closest approach | 9 March 1974 |
| Distance | 1,300 km (810 mi) |
Mars 7 (Russian: Марс-7), also known as 3MP No.51P was a Soviet spacecraft launched in 1973 to explore Mars. A 3MP bus spacecraft which comprised the final mission of the Mars programme, it consisted of a lander and a coast stage with instruments to study Mars as it flew past. Due to a malfunction, the lander failed to perform a maneuver necessary to enter the Martian atmosphere, missing the planet and remaining in heliocentric orbit along with the coast stage.
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