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OAO 3 (COPERNICUS)

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OAO 3 (COPERNICUS) is classified as:


NORAD ID: 6153
Int'l Code: 1972-065A
Perigee: 696.4 km
Apogee: 706.0 km
Inclination: 35.0 °
Period: 98.6 minutes
Semi major axis: 7072 km
RCS: 6.8136 m2 (large)
Launch date: August 21, 1972
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)

This mission was the third in the OAO program and its second successful spacecraft to observe the celestial sphere from above the Earth's atmosphere. A UV telescope with a spectrometer measured high-resolution spectra of stars, galaxies, and planets with the main emphasis on the determination of interstellar absorption lines. Three X-ray telescopes and a collimated proportional counter provided measurements of celestial X-ray sources and interstellar absorption between 1 and 100 A.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 06153U 72065A   25173.56588411  .00000241  00000-0  54129-4 0  9993
2 06153  35.0070 338.9984 0006776 199.4826 216.5946 14.59726814808164
Source of the keplerian elements: AFSPC