Key statistics
Satellite GSTAR 4 at a glance.
Uptime
12712
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
14.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for GSTAR 4.
Object identification
Identified? True
Debris? False
Object name: GSTAR 4
International designator: 1990-100B
Object number (NORAD): 20946
Object ID (CCSDS): 20946
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1452.386 minutes
Inclination: 14.085 deg
SMA: 42482.962 km
Apoapsis: 36119.511 km
Periapsis: 36090.143 km
RAAN: 12.1581 deg
Eccentricy: 0.00034564
Argument of periapsis: 306.5003 deg
Mean anomaly: 59.9568 deg
Mean motion: 0.99147229 rev/day
Mean motion (dot): -0.00000093 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 3:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 7, 2025, 1:23 p.m. UTC
TLE line 0: 0 GSTAR 4
TLE line 1: 1 20946U 90100B 25250.55775794 -.00000093 00000-0 00000-0 0 9997
TLE line 2: 2 20946 14.0850 12.1581 0003456 306.5003 59.9568 0.99147229 44018
Live tracking on map
Real-time ground track for satellite GSTAR 4.
In-orbit conjunctions
There are no conjunctions computed for GSTAR 4, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Geostationary communications satellites
GSTAR 4 was lifted into orbit during the mission ‘Ariane 42P | Satcom C1 & GStar 4’, on board a Ariane 42P space rocket.
The launch took place on Nov. 20, 1990, 11:11 p.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 42P | Satcom C1 & GStar 4
Agency: N/A
Status: Launch Successful
Launch date: Nov. 20, 1990, 11:11 p.m. UTC
Rocket: Ariane 42P
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.
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