COSMOS 1638

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite COSMOS 1638 at a glance.

Uptime

14719

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: 74.055 deg

SMA: 7845.946 km

Apoapsis: 1480.285 km

Periapsis: 1455.337 km

RAAN: 134.6161 deg

Eccentricy: 0.0015899

Argument of periapsis: 321.3526 deg

Mean anomaly: 159.7819 deg

Mean motion: 12.49208054 rev/day

Mean motion (dot): -0.00000018 rev/day2

B* drag term: -0.000011559 1/REarth

Two-line elements (TLE)

Creation date: July 6, 2025, 6:05 p.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 6, 2025, 8:32 a.m. UTC

TLE line 0: 0 COSMOS 1638

TLE line 1: 1 15620U 85023D 25187.35566564 -.00000018 00000-0 -11559-4 0 9991

TLE line 2: 2 15620 74.0550 134.6161 0015899 321.3526 159.7819 12.49208054837545

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 conjunctions

Associated 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.

Launch to space Kosmos-3M | Strela-1M 289-296
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

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Latest news about this satellite

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