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NORAD ID: 5
Int'l Code: 1958-002B
Perigee: 655.5 km
Apogee: 3,847.5 km
Inclination: 34.3 °
Period: 132.8 minutes
Semi major axis: 8622 km
Launch date: March 17, 1958
Source: United States (US)
Comments: 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.
Two Line Element Set (TLE):
1 00005U 58002B 13143.63190689 .00000358 00000-0 42456-3 0 917
2 00005 034.2602 259.2589 1850968 257.7082 081.1181 10.84302201925009
Source: AFSPC
NASA's NSSDC Master Catalog entry for VANGUARD 1
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