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From Wikipedia, the free encyclopedia
Kosmos 391 (Russian: Космос 391 meaning Cosmos 391), also known as DS-P1-I No.11 was a satellite which was used as a radar target for anti-ballistic missile tests. It was launched by the Soviet Union in 1971 as part of the Dnepropetrovsk Sputnik programme.[1]
Mission type | ABM radar target |
---|---|
COSPAR ID | 1971-002A |
SATCAT no. | 04847 |
Spacecraft properties | |
Spacecraft type | DS-P1-I |
Manufacturer | Yuzhnoye |
Launch mass | 300 kilograms (660 lb) |
Start of mission | |
Launch date | 14 January 1971, 12:00:00 UTC |
Rocket | Kosmos-2I 63SM |
Launch site | Plesetsk 133/1 |
End of mission | |
Decay date | 21 February 1971 |
Orbital parameters | |
Reference system | Geocentric |
Regime | Low Earth |
Perigee altitude | 267 kilometres (166 mi) |
Apogee altitude | 803 kilometres (499 mi) |
Inclination | 70.9 degrees |
Period | 95.3 minutes |
It was launched aboard a Kosmos-2I 63SM rocket,[2] from Site 133/1 at Plesetsk. The launch occurred at 12:00:00 UTC on 14 January 1971.[3]
Kosmos 391 was placed into a low Earth orbit with a perigee of 267 kilometres (166 mi), an apogee of 803 kilometres (499 mi), 70.9 degrees of inclination, and an orbital period of 95.3 minutes.[1] It decayed from orbit on 21 February 1971.[4]
Kosmos 391 was the tenth of nineteen DS-P1-I satellites to be launched.[1] Of these, all reached orbit successfully except the seventh.[5]
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