Key statistics
Satellite SKYNET 4D at a glance.
Uptime
10041
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
12.6
Latest
Satellite identification and parameters
Extended collection of information and parameters for SKYNET 4D.
Object identification
Identified? True
Debris? False
Object name: SKYNET 4D
International designator: 1998-002A
Object number (NORAD): 25134
Object ID (CCSDS): 25134
Country: UNITED KINGDOM (UK)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1452.295 minutes
Inclination: 12.5706 deg
SMA: 42481.187 km
Apoapsis: 36125.64 km
Periapsis: 36080.465 km
RAAN: 12.8859 deg
Eccentricy: 0.0005317
Argument of periapsis: 144.9125 deg
Mean anomaly: 106.9125 deg
Mean motion: 0.99153441 rev/day
Mean motion (dot): 0.00000041 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 6:05 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 8:14 a.m. UTC
TLE line 0: 0 SKYNET 4D
TLE line 1: 1 25134U 98002A 25187.34310628 .00000041 00000-0 00000-0 0 9999
TLE line 2: 2 25134 12.5706 12.8859 0005317 144.9125 106.9125 0.99153441 99944
Live tracking on map
Real-time ground track for satellite SKYNET 4D.
In-orbit conjunctions
There are no conjunctions computed for SKYNET 4D, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Skynet 4 was the third generation of UK Ministry of Defense communications satellites. They provided jam-proof communications service between fixed and mobile land and sea-based ground stations.
SKYNET 4D was lifted into orbit during the mission ‘Delta II | Skynet 4D’, on board a Delta II space rocket.
The launch took place on Jan. 10, 1998, 12:32 a.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Delta II | Skynet 4D
Agency: N/A
Status: Launch Successful
Launch date: Jan. 10, 1998, 12:32 a.m. UTC
Rocket: Delta II
Launch pad: Space Launch Complex 17B
Location: Cape Canaveral SFS, FL, USA
...
Latest news about this satellite
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