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Mission
Kind: Orbiter
State: Partial failure
Place: Mars
Operator: Soviet Union
Date
Start:
Duration: 8 months, 15 days (launch to failure to reacquire transmissions)
Mission Ending
Last Contact: March 27, 1989 (spacecraft signal failed to be reacquired).
Rocket
Rocket: Proton-K rocket
Kind: Soviet Union
Mass: 2600 kg (6220 kg with orbital insertion hardware attached)
Flyby
"Requesting permission for flyby." Maverick - Top Gun
Orbit
Reference System: Areocentric
1º Orbit: Mars
Lander
"The journey, not the arrival, matters; the voyage, not the landing." - Paul Theroux
Phobos 2 was the last space probe designed by the Soviet Union. It was designed to explore the moons of Mars, Phobos and Deimos. It was launched on 12 July 1988, and entered orbit on 29 January 1989. Phobos 2 operated nominally throughout its cruise and Mars orbital insertion phases on 29 January 1989, gathering data on the Sun, interplanetary medium, Mars, and Phobos. Phobos 2 investigated Mars surface and atmosphere and returned 37 images of Phobos with a resolution of up to 40 meters. Shortly before the final phase of the mission, during which the spacecraft was to approach within 50 m of Phobos' surface and release two landers (One, a mobile hopper, the other, a stationary platform) contact with Phobos 2 was lost. The mission ended when the spacecraft signal failed to be successfully reacquired on 27 March 1989. The cause of the failure was determined to be a malfunction of the on-board computer.
