Mars 7

Mars 7
Mission typeMars flyby/lander[1]
OperatorLavochkin
COSPAR IDBus: 1973-053A
Lander: 1973-053D[2]
SATCAT no.Bus: 6776
Lander: 7224[2]
Mission duration7 months (launch to nearest approach)
Spacecraft properties
Spacecraft3MP No.51P
ManufacturerLavochkin
Launch mass3,260 kg (fueled lander and bus)[2]
Start of mission
Launch date9 August 1973, 17:00:17 (1973-08-09UTC17:00:17Z) UTC[3]
RocketProton-K/D
Launch siteBaikonur 81/24
End of mission
Last contact25 March 1974[4]
Orbital parameters
Reference systemHeliocentric
Flyby of Mars
Spacecraft componentBus
Closest approach9 March 1974
Mars flyby (failed landing)
Spacecraft componentLander
Closest approach9 March 1974
Distance1,300 km (810 mi)
← Mars 6
 

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.

  1. ^ Krebs, Gunter. "Interplanetary Probes". Gunter's Space Page. Retrieved 13 April 2013.
  2. ^ a b c "Mars 7". US National Space Science Data Centre. Retrieved 12 April 2013.
  3. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 12 April 2013.
  4. ^ Asif A. Siddiqi. "Beyond Earth : A CHRONICLE OF DEEP SPACE EXPLORATION, 1958–2016" (PDF). Nasa.gov. Retrieved 25 January 2022.

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