Mars 2

Also known as M-71 No. 171

Soviet Mars probe

Key facts

Mission type: Mars orbiter/lander
Operator: Soviet space program
Cospar id: 1971-045A , 1971-045D
Satcat number span no: 5234, 5739
Mission duration: 1 year, 3 months and 3 days
Spacecraft type: 4M No. 171
Manufacturer: OKB-1
Launch mass: Total: , 4,650 kg (10,250 lb), Orbiter: , 3,440 kg (7,580 lb), Lander: , 1,210 kg (2,670 lb)
Landing mass: 358 kg (789 lb)
Dry mass: 2,265 kg (4,993 lb)
Dimensions: 4.1 × 2.0 × 5.9 m (13.5 × 6.6 × 19.4 ft)
Launch date: 19 May 1971, 16:22:44 ( 1971-05-19UTC16:22:44Z ) UTC
Rocket: Proton-K / D
Launch site: Baikonur 81/24
Contractor: Khrunichev
Disposal: Decommissioned
Declared: August 22, 1972 ( 1972-08-22 )
Last contact: July 1972

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Wikidata facts

Show 4 more facts

UTC date of spacecraft launch: 1971-05-19
UTC date of spacecraft landing: 1971-11-27
service retirement: 1972-08-22
Commons category: Mars 2

Sources (1)

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Article

The Mars 2 was an uncrewed space probe of the Mars program, a series of uncrewed Mars landers and orbiters launched by the Soviet Union beginning 19 May 1971.

The Mars 2 and Mars 3 missions consisted of identical spacecraft, each with an orbiter and an attached lander. The orbiter is identical to the Venera 9 bus. The type of bus/orbiter is the 4MV. They were launched by a Proton-K heavy launch vehicle with a Blok D upper stage. The lander of Mars 2 became the first human-made object to reach the surface of Mars, although the landing system failed and the lander was lost.