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Zenit-2SB

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Status: Active. First Launch: 2011-11-08. Last Launch: 2011-11-08. Number: 1 .

• Fobos-Grunt - . Mass: 13,500 kg (29,700 lb). Nation: Russia. Class: Mars. Type: Mars orbiter. Spacecraft Bus: 5MV. Spacecraft: Fobos 1F. Decay Date: 2012-01-15 . USAF Sat Cat: 37872 . COSPAR: 2011-065A. Apogee: 274 km (170 mi). Perigee: 199 km (123 mi). Inclination: 51.40 deg. Period: 89.20 min.

  Failed soil-return mission to Martian moon Phobos. The main propulsion system, which was to have boosted the probe out of earth parking orbit to trans-Mars insertion, failed to ignite. Attempts to communicate with the spacecraft partially succeeded but it could not be commanded to conduct an engine burn at a later opportunity. Destroyed on reentry into the earth's atmosphere.