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Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/, Russian: Спутник-1, Satellite 1), often referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Sputnik 1 | Apogee altitude | 939 km (583 mi) | 1.00 | infobox |
| Sputnik 1 | Contractor | OKB-1 | 1.00 | infobox |
| Sputnik 1 | COSPAR ID | 1957-001B | 1.00 | infobox |
| Sputnik 1 | Decay date | 4 January 1958 | 1.00 | infobox |
| Sputnik 1 | Dimensions | 58 cm (23 in) diameter | 1.00 | infobox |
| Sputnik 1 | Disposal | Atmospheric entry | 1.00 | infobox |
| Sputnik 1 | Eccentricity | 0.05201 | 1.00 | infobox |
| Sputnik 1 | Harvard designation | 1957 Alpha 2 | 1.00 | infobox |
| Sputnik 1 | Inclination | 65.10° | 1.00 | infobox |
| Sputnik 1 | Last contact | 26 October 1957 | 1.00 | infobox |
| Sputnik 1 | Launch date | 4 October 1957; 68 years ago (4 October 1957), 19:28:34 UTC | 1.00 | infobox |
| Sputnik 1 | Launch mass | 83.6 kg (184 lb) | 1.00 | infobox |
| Sputnik 1 | Launch site | Baikonur Cosmodrome Site 1/5 | 1.00 | infobox |
| Sputnik 1 | Manufacturer | OKB-1 Ministry of Radiotechnical Industry | 1.00 | infobox |
| Sputnik 1 | Mission duration | 22 days (achieved) | 1.00 | infobox |
| Sputnik 1 | Mission type | Technology demonstration | 1.00 | infobox |
| Sputnik 1 | Names | Спутник 1 Object PS (Prosteishiy Sputnik) Простейший Спутник-1 Elementary Satellite-1 | 1.00 | infobox |
| Sputnik 1 | Operator | OKB-1 | 1.00 | infobox |
| Sputnik 1 | Orbits completed | 1,440 | 1.00 | infobox |
| Sputnik 1 | Perigee altitude | 215 km (134 mi) | 1.00 | infobox |
| Sputnik 1 | Period | 96.20 minutes | 1.00 | infobox |
| Sputnik 1 | Power | 1 watt | 1.00 | infobox |
| Sputnik 1 | Reference system | Geocentric orbit | 1.00 | infobox |
| Sputnik 1 | Regime | Low Earth orbit | 1.00 | infobox |
| Sputnik 1 | Rocket | Sputnik-PS 8K71PS | 1.00 | infobox |
| Sputnik 1 | SATCAT no. | 2 (The launch rocket has SATCAT no.1) | 1.00 | infobox |
| Sputnik 1 | Semi-major axis | 6,955.2 km | 1.00 | infobox |
| Sputnik 1 | Spacecraft | Sputnik-1 | 1.00 | infobox |
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