Key statistics
Satellite OSCAR 25 at a glance.
Uptime
13625
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: 107.253 minutes
Inclination: 90.0347 deg
SMA: 7477.66 km
Apoapsis: 1170.176 km
Periapsis: 1028.873 km
RAAN: 20.2473 deg
Eccentricy: 0.00944837
Argument of periapsis: 243.193 deg
Mean anomaly: 239.5418 deg
Mean motion: 13.4262341 rev/day
Mean motion (dot): 0.00000119 rev/day2
B* drag term: 0.0001902703 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 3:39 p.m. UTC
TLE line 0: 0 OSCAR 25
TLE line 1: 1 19419U 88074A 25347.65270380 .00000119 00000-0 19027-3 0 9996
TLE line 2: 2 19419 90.0347 20.2473 0094484 243.1930 239.5418 13.42623410826529
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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