Key statistics
Satellite COBE at a glance.
Uptime
13175
Days in orbit
Revolutions
≈ 14.1
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for COBE.
Object identification
Identified? True
Debris? False
Object name: COBE
International designator: 1989-089A
Object number (NORAD): 20322
Object ID (CCSDS): 20322
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 102.461 minutes
Inclination: 98.8928 deg
SMA: 7253.23 km
Apoapsis: 880.681 km
Periapsis: 869.51 km
RAAN: 348.1719 deg
Eccentricy: 0.00077002
Argument of periapsis: 236.4582 deg
Mean anomaly: 230.8899 deg
Mean motion: 14.05418139 rev/day
Mean motion (dot): 0.00000104 rev/day2
B* drag term: 0.000091167525 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 2:50 p.m. UTC
TLE line 0: 0 COBE
TLE line 1: 1 20322U 89089A 25347.61807113 .00000104 00000-0 91168-4 0 9995
TLE line 2: 2 20322 98.8928 348.1719 0007700 236.4582 230.8899 14.05418139848591
Live tracking on map
Real-time ground track for satellite COBE.
Associated space launch
Cosmology research satellite
COBE was lifted into orbit during the mission ‘Delta 5920-8 | COBE’, on board a Delta 5920-8 space rocket.
The launch took place on Nov. 18, 1989, 2:34 p.m. from Space Launch Complex 2W.
For more information about the launch, click the button.
Delta 5920-8 | COBE
Agency: N/A
Status: Launch Successful
Launch date: Nov. 18, 1989, 2:34 p.m. UTC
Rocket: Delta 5920-8
Launch pad: Space Launch Complex 2W
Location: Vandenberg SFB, CA, USA
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