Key statistics
Satellite OSCAR 27 at a glance.
Uptime
13754
Days in orbit
Revolutions
≈ 13.4
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
90.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for OSCAR 27.
Object identification
Identified? True
Debris? False
Object name: OSCAR 27
International designator: 1987-080A
Object number (NORAD): 18361
Object ID (CCSDS): 18361
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 107.074 minutes
Inclination: 90.3719 deg
SMA: 7469.368 km
Apoapsis: 1170.199 km
Periapsis: 1012.268 km
RAAN: 71.3703 deg
Eccentricy: 0.0105719
Argument of periapsis: 116.5626 deg
Mean anomaly: 244.6404 deg
Mean motion: 13.44859591 rev/day
Mean motion (dot): 0.00000118 rev/day2
B* drag term: 0.00017859 1/REarth
Two-line elements (TLE)
Creation date: May 12, 2025, 10:36 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 12, 2025, 8:50 p.m. UTC
TLE line 0: 0 OSCAR 27
TLE line 1: 1 18361U 87080A 25132.86844885 .00000118 00000-0 17859-3 0 9999
TLE line 2: 2 18361 90.3719 71.3703 0105719 116.5626 244.6404 13.44859591847070
Live tracking on map
Real-time ground track for satellite OSCAR 27.
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 27 was lifted into orbit during the mission ‘Scout G-1 | Transit-O 27,29’, on board a Scout G-1 space rocket.
The launch took place on Sept. 16, 1987, 7:22 p.m. from Space Launch Complex 5.
For more information about the launch, click the button.
Scout G-1 | Transit-O 27,29
Agency: N/A
Status: Launch Successful
Launch date: Sept. 16, 1987, 7:22 p.m. UTC
Rocket: Scout G-1
Launch pad: Space Launch Complex 5
Location: Vandenberg SFB, CA, USA
...
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