Proton (satellite program)
Series of Soviet satellites / From Wikipedia, the free encyclopedia
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Proton (Russian: протон) ('proton') was a Soviet series of four cosmic ray and elementary particle detecting satellites. Orbited 1965–68, three on test flights of the UR-500 ICBM and one on a Proton-K rocket, all four satellites completed their missions successfully, the last reentering the Earth's atmosphere in 1969.
Quick Facts Mission type, Operator ...
Mission type | Astronomy |
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Operator | Soviet Union |
COSPAR ID |
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Spacecraft properties | |
Manufacturer | OKB-52 |
Launch mass |
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Start of mission | |
Launch date |
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Rocket | UR-500 (1–3), Proton-K (4) |
Launch site | Baikonur Cosmodrome Site 81/23 (1–3), Baikonur Cosmodrome Site 81/24 (4) |
End of mission | |
Disposal | De-orbited |
Decay date |
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Orbital parameters | |
Reference system | Geocentric |
Eccentricity | .030 (1–3), .017 (4) |
Perigee altitude |
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Apogee altitude | |
Inclination | 63.5° (1–3), 31.5° (4) |
Period | ~92 minutes (1–4) |
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