VANGUARD 1

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VANGUARD 1 is classified as:

Space & Earth Science

NORAD ID: 5

Int'l Code: 1958-002B

Perigee: 661.1 km

Apogee: 3,837.0 km

Inclination: 34.3 °

Period: 132.7 minutes

Semi major axis: 8620 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.

1     5U 58002B   19262.35472694  .00000121  00000-0  13657-3 0  9999
2     5  34.2533 346.4561 1842150 207.9963 140.8230 10.84767700175802

Source of the keplerian elements: Caltech