Key statistics
Satellite HELIOS 1A at a glance.
Uptime
11120
Days in orbit
Revolutions
≈ 15.0
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.2
Latest
Satellite identification and parameters
Extended collection of information and parameters for HELIOS 1A.
Object identification
Identified? True
Debris? False
Object name: HELIOS 1A
International designator: 1995-033A
Object number (NORAD): 23605
Object ID (CCSDS): 23605
Country: FRANCE (FR)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 95.71 minutes
Inclination: 98.22 deg
SMA: 6931.016 km
Apoapsis: 560.577 km
Periapsis: 545.185 km
RAAN: 223.6924 deg
Eccentricy: 0.00111039
Argument of periapsis: 288.6731 deg
Mean anomaly: 71.3288 deg
Mean motion: 15.04552818 rev/day
Mean motion (dot): 0.00002774 rev/day2
B* drag term: 0.00020259118 1/REarth
Two-line elements (TLE)
Creation date: Dec. 16, 2025, 2:19 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 15, 2025, 10:14 p.m. UTC
TLE line 0: 0 HELIOS 1A
TLE line 1: 1 23605U 95033A 25349.92665526 .00002774 00000-0 20259-3 0 9991
TLE line 2: 2 23605 98.2200 223.6924 0011104 288.6731 71.3288 15.04552818640591
Live tracking on map
Real-time ground track for satellite HELIOS 1A.
In-orbit conjunctions
There are no conjunctions computed for HELIOS 1A, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated 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 1A was lifted into orbit during the mission ‘Ariane 40 | Helios 1A’, on board a Ariane 40 space rocket.
The launch took place on July 7, 1995, 4:23 p.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 40 | Helios 1A
Agency: N/A
Status: Launch Successful
Launch date: July 7, 1995, 4:23 p.m. UTC
Rocket: Ariane 40
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
Latest news about this satellite
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