Key statistics
Satellite BISONSAT at a glance.
Uptime
3720
Days in orbit
Revolutions
≈ 14.9
Per day
Orbit
LEO
Low Earth Orbit
Inclination
64.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for BISONSAT.
Object identification
Identified? True
Debris? False
Object name: BISONSAT
International designator: 2015-058E
Object number (NORAD): 40968
Object ID (CCSDS): 40968
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Period: 96.379 minutes
Inclination: 64.7752 deg
SMA: 6963.306 km
Apoapsis: 670.944 km
Periapsis: 499.398 km
RAAN: 119.1508 deg
Eccentricy: 0.01231791
Argument of periapsis: 127.7583 deg
Mean anomaly: 233.4768 deg
Mean motion: 14.94099562 rev/day
Mean motion (dot): 0.00007488 rev/day2
B* drag term: 0.00061456999 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, 3:44 p.m. UTC
TLE line 0: 0 BISONSAT
TLE line 1: 1 40968U 15058E 25347.65564068 .00007488 00000-0 61457-3 0 9990
TLE line 2: 2 40968 64.7752 119.1508 0123179 127.7583 233.4768 14.94099562 88920
Live tracking on map
Real-time ground track for satellite BISONSAT.
In-orbit conjunctions
There are no conjunctions computed for BISONSAT, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Classified payload for the U.S. National Reconnaissance Office.
BISONSAT was lifted into orbit during the mission ‘Atlas V 401 | NROL-55 (Multipayload mission)’, on board a Atlas V 401 space rocket.
The launch took place on Oct. 8, 2015, 12:49 p.m. from Space Launch Complex 3E.
For more information about the launch, click the button.
Atlas V 401 | NROL-55 (Multipayload mission)
Agency: N/A
Status: Launch Successful
Launch date: Oct. 8, 2015, 12:49 p.m. UTC
Rocket: Atlas V 401
Launch pad: Space Launch Complex 3E
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
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