Sputnik 1
"Спутник-1" |
Major contractors |
OKB-1, Soviet Ministry of Radiotechnical Industry |
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Mission type |
Atmospheric studies |
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Satellite of |
Earth |
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Orbits |
1,440 |
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Launch date |
19:28:34, October 4, 1957 (UTC) (1957-10-04T19:28:34Z) (22:28:34 MSK) |
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Launch vehicle |
R-7 Rocket |
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Mission duration |
3 months |
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Orbital decay |
4 January 1958 |
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COSPAR ID |
1957-001B |
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Home page |
NASA NSSDC Master Catalog |
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Mass |
83.6 kg (184.3 lb) |
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Semimajor axis |
6,955.2 km (4,321.8 mi) |
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Eccentricity |
0.05201 |
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Inclination |
65.1° |
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Orbital period |
96.2 minutes |
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Apoapsis |
7,310 km (4,540 mi) from centre, 939 km (583 mi) from surface |
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Periapsis |
6,586 km (4,092 mi) from centre, 215 km (134 mi) from surface |