VANGUARD 1

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VANGUARD 1 is classified as:

Space & Earth Science

NORAD ID: 5

Int'l Code: 1958-002B

Perigee: 656.8 km

Apogee: 3,829.1 km

Inclination: 34.2 °

Period: 132.6 minutes

Semi major axis: 8613 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   25186.42991674 -.00000037  00000-0 -29307-4 0  9991
2     5  34.2485 304.5890 1841335  15.0409 349.8185 10.85926411405673

Source of the keplerian elements: Caltech