From Wikipedia, the free encyclopedia
Sputnik 1
 A mockup of Sputnik 1
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| Mission type
| Technology
Ionospheric
Atmospheric
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|---|
| Operator
| OKB-1
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| Harvard designation
| 1957 Alpha 2
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| SATCAT
no.
| 2
|
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| Mission duration
| 2 months
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| Manufacturer
| OKB-1
Soviet Ministry of Radiotechnical Industry
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| Launch mass
| 83.6 kg (184 lb)
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| Launch date
| 4 October 1957, 19:28:34
(
1957-10-04UTC19:28:34Z
)
UTC
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| Rocket
| Sputnik
8K71PS
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| Launch site
| Baikonur
1/5
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| Decay date
| 4 January 1958
(
1958-01-05
)
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| Reference system
| Geocentric
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| Regime
| Low Earth orbit
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| Semi-major axis
| 6,955.2 kilometres (4,321.8 mi)
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| Eccentricity
| 0.05201
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| Perigee altitude
| 214 kilometres (133 mi)
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| Apogee altitude
| 938 kilometres (583 mi)
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| Inclination
| 65.1 degrees
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| Period
| 96.18 minutes
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| Epoch
| 4 October 1957
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