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COBE

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COBE is classified as:


NORAD ID: 20322
Int'l Code: 1989-089A
Perigee: 878.2 km
Apogee: 890.3 km
Inclination: 98.9 °
Period: 102.5 minutes
Semi major axis: 7255 km
RCS: 15.7616 m2 (large)
Launch date: November 18, 1989
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

The purpose of the Cosmic Background Explorer (COBE) mission was to take precise measurements of the diffuse radiation between 1 micrometer and 1 cm over the whole celestial sphere. The following quantities were measured: (1) the spectrum of the 3 K radiation over the range 100 micrometers to 1 cm; (2) the anisotropy of this radiation from 3 to 10 mm; and, (3) the spectrum and angular distribution of diffuse infrared background radiation at wavelengths from 1 to 300 micrometers.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 20322U 89089A   18292.59504841 -.00000212 +00000-0 -10451-3 0  9992
2 20322 098.9326 306.5306 0008315 347.2116 119.6960 14.04832508481800
Source of the keplerian elements: AFSPC