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COSMOS 1636, 15618

Orbit data source: Space-Track

COSMOS 1636, 15618 is a payload satellite in LEO that was launched on Thu, 21 Mar 1985 UTC via a KOSMOS 11K65M launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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<iframe src="https://www.satcat.com/sats-embedded/15618?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/15618?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

15618, 1985-023B

Orbit

LEO

Last TLE update

18 hours ago

Origin

Russian Space Forces (RU)

Manufacturer

NPO PM

Mission

Defense Communications

Bus & Motor

STRELA-1 11F625, Unknown motor

Mass

60 kg wet, 60 kg dry

Launch date (UTC)

1985-03-21 (40 years ago)

Launch vehicle

KOSMOS 11K65M

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Sphere, 0.8 m

Radar Cross Section

0.588 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 18 hours ago

0 COSMOS 1636
1 15618U 85023B   25141.85486694  .00000004  00000-0  13380-3 0  9994
2 15618  74.0558 334.1208 0012971 283.1302 186.3891 12.45350706826412

Epoch: 2025-05-21T20:31Z

TLE epoch observation values (Epoch: 2025-05-21T20:31:00.503Z)

Latitude

65.09721°

Longitude

-71.12617°

Altitude

1,505.01 km

Speed

7.113 km/s

True Right ascension

07h 45m 26s

True Declination

64° 58' 41"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-58.96022°

Longitude

117.44006°

Altitude

1,496.559 km

Speed

7.12 km/s

Apparent Right ascension

15h 25m 08s

Apparent Declination

-69° 10' 43"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

23:53:47

Azimuth

206.065° SW

Elevation

-49.858°

Doppler factor

Orbital elements

Apogee altitude

1,492.036 km

Perigee altitude

1,471.645 km

Semi-major axis

7,859.978 km

Eccentricity

0.0013

Inclination

74.0558°

RAAN

334.1208°

Arg. of periapsis

283.1302°

True anomaly

Unknown

Mean anomaly

186.3891°

Eccentric anomaly

Unknown

Mean motion

3.11466 °/min

Orbital period

115.58 mins

BSTAR

0.0001338

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Other satellites on launch #23 in the year 1985 (1985-03-21 UTC)

COSMOS 1636 Visibility forecast

Observer location: undefined°, undefined°

Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
14 mins	2025-05-22 15:21:18.912Z	243.933° WSW	2025-05-22 15:28:18.912Z	305.243° NW	28.973°	2025-05-22 15:35:18.912Z	2.409° NNE
6 mins	2025-05-22 21:36:18.912Z	25.332° NE	2025-05-22 21:38:18.912Z	39.787° NE	13.614°	2025-05-22 21:42:18.912Z	68.161° E
16 mins	2025-05-22 23:31:18.912Z	349.061° N	2025-05-22 23:39:18.912Z	79.775° E	40.948°	2025-05-22 23:47:18.912Z	145.891° SSE
13 mins	2025-05-23 01:30:18.912Z	315.5° NNW	2025-05-23 01:36:18.912Z	265.053° W	26.108°	2025-05-23 01:43:18.912Z	210.858° SW
13 mins	2025-05-23 12:31:18.912Z	146.345° SSE	2025-05-23 12:37:18.912Z	94.688° ESE	27.31°	2025-05-23 12:44:18.912Z	39.083° NE
16 mins	2025-05-23 14:27:18.912Z	218.287° SW	2025-05-23 14:34:18.912Z	282.201° WNW	40.059°	2025-05-23 14:43:18.912Z	12.24° NNE

Authenticating...

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Check out COSMOS 1636, 15618 on other resources

View COSMOS 1636, 15618 on NASA - NSSDCA Website

View COSMOS 1636, 15618 on Heavens-Above

View COSMOS 1636, 15618 on Keep Track

View COSMOS 1636, 15618 on Celestrak

View COSMOS 1636, 15618 on Gunter's Space Page

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