Key statistics
Satellite HELIOS 2A at a glance.
Uptime
7617
Days in orbit
Revolutions
≈ 15.0
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for HELIOS 2A.
Object identification
Identified? True
Debris? False
Object name: HELIOS 2A
International designator: 2004-049A
Object number (NORAD): 28492
Object ID (CCSDS): 28492
Country: FRANCE (FR)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 95.892 minutes
Inclination: 98.2858 deg
SMA: 6939.813 km
Apoapsis: 564.481 km
Periapsis: 558.876 km
RAAN: 331.0468 deg
Eccentricy: 0.00040383
Argument of periapsis: 24.9379 deg
Mean anomaly: 335.2038 deg
Mean motion: 15.016927 rev/day
Mean motion (dot): 0.00003156 rev/day2
B* drag term: 0.0002479765 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, 11:48 p.m. UTC
TLE line 0: 0 HELIOS 2A
TLE line 1: 1 28492U 04049A 25297.99170234 .00003156 00000-0 24798-3 0 9990
TLE line 2: 2 28492 98.2858 331.0468 0004038 24.9379 335.2038 15.01692700118455
Live tracking on map
Real-time ground track for satellite HELIOS 2A.
In-orbit conjunctions
There are no conjunctions computed for HELIOS 2A, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Helios and Essaim are French miltary satellites for observation of Earth. Parasol is an Earth Observation research satellite.Nanosat 01 is a small technologu demonstator for the spanish space agency INTA.
HELIOS 2A was lifted into orbit during the mission ‘Ariane 5 G+ | Helios 2A, Essaim 1, 2, 3, 4, PARASOL, Nanosat 01’, on board a Ariane 5 G+ space rocket.
The launch took place on Dec. 18, 2004, 4:26 p.m. from Ariane Launch Area 3.
For more information about the launch, click the button.
Ariane 5 G+ | Helios 2A, Essaim 1, 2, 3, 4, PARASOL, Nanosat 01
Agency: N/A
Status: Launch Successful
Launch date: Dec. 18, 2004, 4:26 p.m. UTC
Rocket: Ariane 5 G+
Launch pad: Ariane Launch Area 3
Location: Guiana Space Centre, French Guiana
...
Latest news about this satellite
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