Key statistics
Satellite OPS 8781 at a glance.
Uptime
17379
Days in orbit
Revolutions
≈ 14.1
Per day
Orbit
LEO
Low Earth Orbit
Inclination
63.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for OPS 8781.
Object identification
Identified? True
Debris? False
Object name: OPS 8781
International designator: 1977-112A
Object number (NORAD): 10502
Object ID (CCSDS): 10502
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 102.398 minutes
Inclination: 63.3267 deg
SMA: 7250.254 km
Apoapsis: 1240.911 km
Periapsis: 503.327 km
RAAN: 11.9705 deg
Eccentricy: 0.0508661
Argument of periapsis: 156.9375 deg
Mean anomaly: 205.5427 deg
Mean motion: 14.06283733 rev/day
Mean motion (dot): 0.00001642 rev/day2
B* drag term: 0.00032846 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 10:56 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 8:12 p.m. UTC
TLE line 0: 0 OPS 8781
TLE line 1: 1 10502U 77112A 25187.84209193 .00001642 00000-0 32846-3 0 9994
TLE line 2: 2 10502 63.3267 11.9705 0508661 156.9375 205.5427 14.06283733 59480
Live tracking on map
Real-time ground track for satellite OPS 8781.
In-orbit conjunctions
There are no conjunctions computed for OPS 8781, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
The Parcae satellites were passive ELINT satellites. MSD satellites were dispensers of triplets of ocean surveillance satellites.
OPS 8781 was lifted into orbit during the mission ‘Atlas F/MSD | Parcae 2A,B,C & MSD 2’, on board a Atlas F/MSD space rocket.
The launch took place on Dec. 8, 1977, 5:45 p.m. from Space Launch Complex 3W.
For more information about the launch, click the button.
Atlas F/MSD | Parcae 2A,B,C & MSD 2
Agency: N/A
Status: Launch Successful
Launch date: Dec. 8, 1977, 5:45 p.m. UTC
Rocket: Atlas F/MSD
Launch pad: Space Launch Complex 3W
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
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