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COSMOS 1911, 18790

Orbit data source: Space-Track

COSMOS 1911, 18790 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Fri, 15 Jan 1988 UTC via a TSIKLON-3 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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https://www.satcat.com/sats-embedded/18790?theme=dark&initialShowStats=false

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Identifier

18790, 1988-002C

Orbit

LEO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

NPO PM

Mission

Defense Communications

Bus & Motor

STRELA-3, Unknown motor

Mass

225 kg wet, 225 kg dry

Launch date (UTC)

1988-01-15 (38 years ago)

Launch vehicle

TSIKLON-3

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.8 m

Radar Cross Section

1.257 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 COSMOS 1911
1 18790U 88002C   26036.75938183  .00000045  00000-0  18594-3 0  9993
2 18790  82.6133 332.3851 0008478  72.5848 350.9999 12.64380517756342

Epoch: 2026-02-05T18:13Z

TLE epoch observation values (Epoch: 2026-02-05T18:13:30.590Z)

Latitude

62.71318°

Longitude

-62.41741°

Altitude

1,409.129 km

Speed

7.164 km/s

True Right ascension

23h 07m 28s

True Declination

62° 35' 04"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

04:38:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,408.828 km

Perigee altitude

1,395.636 km

Semi-major axis

7,780.369 km

Eccentricity

0.00085

Inclination

82.6133°

RAAN

332.3851°

Arg. of periapsis

72.5848°

True anomaly

350.98469°

Mean anomaly

350.9999°

Eccentric anomaly

350.99229°

Mean motion

3.16259 °/min

Orbital period

113.83 mins

BSTAR

0.00018594

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Other satellites on launch #2 in the year 1988 (1988-01-15 UTC)

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COSMOS 1911 Visibility forecast

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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.
11 mins	2026-02-06 05:54:02.157Z	20.17° NNE	2026-02-06 06:00:02.157Z	70.142° E	21.369°	2026-02-06 06:05:02.157Z	111.429° ESE
14 mins	2026-02-06 07:49:02.157Z	346.284° N	2026-02-06 07:55:02.157Z	279.761° WNW	43.495°	2026-02-06 08:03:02.157Z	184.945° SSW
10 mins	2026-02-06 18:43:02.157Z	119.186° SE	2026-02-06 18:48:02.157Z	76.554° E	20.392°	2026-02-06 18:53:02.157Z	37.17° NE
14 mins	2026-02-06 20:35:02.157Z	196.88° SSW	2026-02-06 20:42:02.157Z	303.617° NW	43.301°	2026-02-06 20:49:02.157Z	2.86° NNE
5 mins	2026-02-06 22:36:02.157Z	285.61° WNW	2026-02-06 22:38:02.157Z	300.838° NW	12.744°	2026-02-06 22:41:02.157Z	323.091° NNW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out COSMOS 1911, 18790 on other resources

View COSMOS 1911, 18790 on NASA - NSSDCA Website

View COSMOS 1911, 18790 on Heavens-Above

View COSMOS 1911, 18790 on Keep Track

View COSMOS 1911, 18790 on Celestrak

View COSMOS 1911, 18790 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

COSMOS 1911, 18790

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-02-05T18:13:30.590Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #2 in the year 1988 (1988-01-15 UTC)

COSMOS 1911 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 1911, 18790 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago