OAO 3 (COPERNICUS)

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OAO 3 (COPERNICUS) is classified as:

• Brightest

NORAD ID: 6153
Int'l Code: 1972-065A
Perigee: 702.2 km
Apogee: 711.5 km
Inclination: 35.0 °
Period: 98.8 minutes
Semi major axis: 7077 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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1  6153U 72065A   21113.11220869  .00000062  00000-0  17776-4 0  9992
2  6153  35.0080 347.3039 0006589   7.6207 124.0160 14.57977934586179

Source of the keplerian elements: AFSPC