Key statistics
Satellite COSMOS 1639 at a glance.
Uptime
14659
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 1639.
Object identification
Identified? True
Debris? False
Object name: COSMOS 1639
International designator: 1985-023E
Object number (NORAD): 15621
Object ID (CCSDS): 15621
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 115.103 minutes
Inclination: 74.0522 deg
SMA: 7838.24 km
Apoapsis: 1480.063 km
Periapsis: 1440.148 km
RAAN: 145.5479 deg
Eccentricy: 0.0025462
Argument of periapsis: 325.1073 deg
Mean anomaly: 146.4405 deg
Mean motion: 12.51050646 rev/day
Mean motion (dot): 0.00000011 rev/day2
B* drag term: 0.00017138 1/REarth
Two-line elements (TLE)
Creation date: May 9, 2025, 2:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 8, 2025, 11:17 a.m. UTC
TLE line 0: 0 COSMOS 1639
TLE line 1: 1 15621U 85023E 25128.47063127 .00000011 00000-0 17138-3 0 9996
TLE line 2: 2 15621 74.0522 145.5479 0025462 325.1073 146.4405 12.51050646832896
Live tracking on map
Real-time ground track for satellite COSMOS 1639.
In-orbit conjunctions
There are no conjunctions computed for COSMOS 1639, 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 1639 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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