EXPLORER 1

EXPLORER 1 is no longer on orbit

NORAD ID: 4

Int'l Code: 1958-001A

Launch date: February 1, 1958
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)
Decay date: 1970-03-31

Explorer 1 was the first successfully launched U. S. spacecraft. Launched late on 31 January 1958 (10:48 p.m. EST, or 03:48 UTC on 01 February) on an adapted Jupiter-C rocket, Explorer 1 carried instrumentation for the study of cosmic rays, micrometeorites, and for monitoring of the satellite's temperature

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Two Line Element Set (TLE):

Source of the keplerian elements: AFSPC