Key statistics
Satellite CLEMENTINE at a glance.
Uptime
9409
Days in orbit
Revolutions
≈ 15.3
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.2
Latest
Satellite identification and parameters
Extended collection of information and parameters for CLEMENTINE.
Object identification
Identified? True
Debris? False
Object name: CLEMENTINE
International designator: 1999-064B
Object number (NORAD): 25978
Object ID (CCSDS): 25978
Country: FRANCE (FR)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 94.334 minutes
Inclination: 98.1785 deg
SMA: 6864.43 km
Apoapsis: 488.941 km
Periapsis: 483.649 km
RAAN: 308.9649 deg
Eccentricy: 0.00038547
Argument of periapsis: 75.8996 deg
Mean anomaly: 284.2668 deg
Mean motion: 15.26497319 rev/day
Mean motion (dot): 0.00019804 rev/day2
B* drag term: 0.00076051074 1/REarth
Two-line elements (TLE)
Creation date: Sept. 6, 2025, 2:09 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 5, 2025, 10:06 p.m. UTC
TLE line 0: 0 CLEMENTINE
TLE line 1: 1 25978U 99064B 25248.92113982 .00019804 00000-0 76051-3 0 9999
TLE line 2: 2 25978 98.1785 308.9649 0003855 75.8996 284.2668 15.26497319664992
Live tracking on map
Real-time ground track for satellite CLEMENTINE.
Associated space launch
The Helios program is Europe's military optical reconnaissance system consisting of both a space and a ground segment, which commenced service in 1995, jointly funded by the French, Italian and Spanish governments. The Helios I optical observation satellites, launched in July 1995 and December 1999 respectively, can acquire high resolution images of any point on the globe, with daily revisit capability. Helios-1B had suffered a breakdown of its power supply system in October 2004 and could no longer perform any work after operating for just under its 5-year nominal life expectancy.
CLEMENTINE was lifted into orbit during the mission ‘Ariane 40 | Helios 1B’, on board a Ariane 40 space rocket.
The launch took place on Dec. 3, 1999, 4:22 p.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 40 | Helios 1B
Agency: N/A
Status: Launch Successful
Launch date: Dec. 3, 1999, 4:22 p.m. UTC
Rocket: Ariane 40
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
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