VANGUARD 1

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VANGUARD 1 is classified as:

• Space & Earth Science

NORAD ID: 5
Int'l Code: 1958-002B
Perigee: 657.6 km
Apogee: 3,839.9 km
Inclination: 34.2 °
Period: 132.7 minutes
Semi major axis: 8619 km
RCS: 0.118 m² (medium)
Launch date: March 17, 1958
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)

Vanguard 1 was a small earth-orbiting satellite designed to test the launch capabilities of a three-stage launch vehicle and the effects of the environment on a satellite and its systems in Earth orbit. It also was used to obtain geodetic measurements through orbit analysis.

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1     5U 58002B   21171.35872253  .00000054  00000-0  48563-4 0  9996
2     5  34.2477 174.8038 1845924 208.0188 140.7664 10.84831306245312

Source of the keplerian elements: Caltech