Pioneer Venus 1 Full Mission Timeline

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Spacecraft Event Time. UTC/GMT Times.

Time (UTC/GMT+0)Event
1978-05-20  13:13:00Launch
1978-12-04Venus orbit insertion. Periapsis held between 142km and 253km
1980-07-01Periapsis allowed to rise more (up to 2,290 km) and fall to conserve fuel
1991-01-01Reactivation of radar mapper to map previously inaccessible areas
1992-05-01Start of final phase, periapsis at 150 - 250 km
1993-08-01Spacecraft runs out of fuel, burns up on entry into Venus athmosphere