Key statistics
Satellite COSMOS 991 at a glance.
Uptime
17298
Days in orbit
Revolutions
≈ 13.8
Per day
Orbit
LEO
Low Earth Orbit
Inclination
83.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 991.
Object identification
Identified? True
Debris? False
Object name: COSMOS 991
International designator: 1978-022A
Object number (NORAD): 10692
Object ID (CCSDS): 10692
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.611 minutes
Inclination: 82.989 deg
SMA: 7354.344 km
Apoapsis: 1003.111 km
Periapsis: 949.307 km
RAAN: 140.753 deg
Eccentricy: 0.003658
Argument of periapsis: 170.1482 deg
Mean anomaly: 249.3384 deg
Mean motion: 13.76533678 rev/day
Mean motion (dot): 0.00000039 rev/day2
B* drag term: 0.000024268 1/REarth
Two-line elements (TLE)
Creation date: July 8, 2025, 2:27 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 7, 2025, 10:13 p.m. UTC
TLE line 0: 0 COSMOS 991
TLE line 1: 1 10692U 78022A 25188.92586303 .00000039 00000-0 24268-4 0 9995
TLE line 2: 2 10692 82.9890 140.7530 0036580 170.1482 249.3384 13.76533678378012
Live tracking on map
Real-time ground track for satellite COSMOS 991.
In-orbit conjunctions
A list of the most updated potential collisions computed for object COSMOS 991.
Associated space launch
Navigation satellite providing location information for the Tsiklon-B navigation system
COSMOS 991 was lifted into orbit during the mission ‘Kosmos-3M | Parus 13’, on board a Kosmos-3M space rocket.
The launch took place on Feb. 28, 1978, 6:43 a.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Parus 13
Agency: N/A
Status: Launch Successful
Launch date: Feb. 28, 1978, 6:43 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
