Key statistics
Satellite OSCAR 25 at a glance.
Uptime
13467
Days in orbit
Revolutions
≈ 13.4
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
90.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for OSCAR 25.
Object identification
Identified? True
Debris? False
Object name: OSCAR 25
International designator: 1988-074A
Object number (NORAD): 19419
Object ID (CCSDS): 19419
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 107.255 minutes
Inclination: 90.0278 deg
SMA: 7477.786 km
Apoapsis: 1170.865 km
Periapsis: 1028.437 km
RAAN: 19.7143 deg
Eccentricy: 0.0095234
Argument of periapsis: 335.2962 deg
Mean anomaly: 34.6899 deg
Mean motion: 13.42589332 rev/day
Mean motion (dot): 0.00000079 rev/day2
B* drag term: 0.00012179 1/REarth
Two-line elements (TLE)
Creation date: July 9, 2025, 2:22 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 6:47 p.m. UTC
TLE line 0: 0 OSCAR 25
TLE line 1: 1 19419U 88074A 25189.78304744 .00000079 00000-0 12179-3 0 9992
TLE line 2: 2 19419 90.0278 19.7143 0095234 335.2962 34.6899 13.42589332805349
Live tracking on map
Real-time ground track for satellite OSCAR 25.
Associated space launch
The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
OSCAR 25 was lifted into orbit during the mission ‘Scout G-1 | Transit-O 25,31’, on board a Scout G-1 space rocket.
The launch took place on Aug. 25, 1988, 6:59 a.m. from Space Launch Complex 5.
For more information about the launch, click the button.
Scout G-1 | Transit-O 25,31
Agency: N/A
Status: Launch Successful
Launch date: Aug. 25, 1988, 6:59 a.m. UTC
Rocket: Scout G-1
Launch pad: Space Launch Complex 5
Location: Vandenberg SFB, CA, USA
...
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