Key statistics
Satellite CLEMENTINE at a glance.
Uptime
9458
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: 94.201 minutes
Inclination: 98.1698 deg
SMA: 6857.976 km
Apoapsis: 481.231 km
Periapsis: 478.451 km
RAAN: 2.4182 deg
Eccentricy: 0.0002027
Argument of periapsis: 235.212 deg
Mean anomaly: 124.8927 deg
Mean motion: 15.28652595 rev/day
Mean motion (dot): 0.00022412 rev/day2
B* drag term: 0.0008057238 1/REarth
Two-line elements (TLE)
Creation date: Oct. 25, 2025, 3:11 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 24, 2025, 5:23 p.m. UTC
TLE line 0: 0 CLEMENTINE
TLE line 1: 1 25978U 99064B 25297.72496801 .00022412 00000-0 80572-3 0 9997
TLE line 2: 2 25978 98.1698 2.4182 0002027 235.2120 124.8927 15.28652595672441
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
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
