Key statistics
Satellite COSMOS 1638 at a glance.
Uptime
14781
Days in orbit
Revolutions
≈ 12.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 1638.
Object identification
Identified? True
Debris? False
Object name: COSMOS 1638
International designator: 1985-023D
Object number (NORAD): 15620
Object ID (CCSDS): 15620
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 115.273 minutes
Inclination: 74.0548 deg
SMA: 7845.942 km
Apoapsis: 1480.239 km
Periapsis: 1455.374 km
RAAN: 51.7565 deg
Eccentricy: 0.00158454
Argument of periapsis: 230.4894 deg
Mean anomaly: 243.6906 deg
Mean motion: 12.49209114 rev/day
Mean motion (dot): -0.00000012 rev/day2
B* drag term: 0.000021880536 1/REarth
Two-line elements (TLE)
Creation date: Sept. 7, 2025, 3:09 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 6, 2025, 9:28 p.m. UTC
TLE line 0: 0 COSMOS 1638
TLE line 1: 1 15620U 85023D 25249.89461669 -.00000012 00000-0 21881-4 0 9991
TLE line 2: 2 15620 74.0548 51.7565 0015845 230.4894 243.6906 12.49209114845354
Live tracking on map
Real-time ground track for satellite COSMOS 1638.
In-orbit conjunctions
There are no conjunctions computed for COSMOS 1638, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Military communications satellites
COSMOS 1638 was lifted into orbit during the mission ‘Kosmos-3M | Strela-1M 289-296’, on board a Kosmos-3M space rocket.
The launch took place on March 21, 1985, 12:08 a.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Strela-1M 289-296
Agency: N/A
Status: Launch Successful
Launch date: March 21, 1985, 12:08 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.
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