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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
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   26253.65999097  .00000181  00000-0  41328-4 0  9999
2 06153  35.0066 323.3696 0007067 237.7307 253.6788 14.60099995873243
Source of the keplerian elements: AFSPC