Mars 4

space probe

Key facts

Mission type: Mars orbiter
Operator: Soviet space program
Cospar id: 1973-047A
Mission duration: 203 days, 20 hours and 7 minutes
Spacecraft: 3MS No.52S
Manufacturer: NPO Lavochkin
Launch mass: 3,440 kg (7,580 lb)
Launch date: 21 July 1973, 19:30:59 ( 1973-07-21UTC19:30:59Z ) UTC
Rocket: Proton-K / D
Launch site: Baikonur 81/23
Contractor: Khrunichev
Last contact: 10 February 1974, 15:38 UTC
Reference system

~2 min read

Article

Mars 4 (Russian: Марс-4), also known as 3MS No.52S was a Soviet spacecraft intended to explore Mars. A 3MS spacecraft launched as part of the Mars programme, it was intended to enter orbit around Mars in 1974. However, computer problems prevented orbital insertion from occurring.

Spacecraft