Showing default

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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/18790?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/18790?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

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: 7 hours ago

TLE from 7 hours ago

0 COSMOS 1911
1 18790U 88002C   26092.95407030  .00000033  00000-0  12431-3 0  9990
2 18790  82.6053 296.5403 0006641 309.1322 172.0367 12.64382756763441

Epoch: 2026-04-02T22:53Z

TLE epoch observation values (Epoch: 2026-04-02T22:53:51.673Z)

Latitude

58.13183°

Longitude

-70.20972°

Altitude

1,419.778 km

Speed

7.154 km/s

True Right ascension

06h 58m 12s

True Declination

57° 59' 26"

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

11:52:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,407.39 km

Perigee altitude

1,397.056 km

Semi-major axis

7,780.36 km

Eccentricity

0.00066

Inclination

82.6053°

RAAN

296.5403°

Arg. of periapsis

309.1322°

True anomaly

172.04723°

Mean anomaly

172.0367°

Eccentric anomaly

172.04197°

Mean motion

3.1626 °/min

Orbital period

113.83 mins

BSTAR

0.00012431

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

COSMOS 1911 Visibility forecast

Loading observer location...
Set Observer location

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.
15 mins	2026-04-03 13:31:55.450Z	161.056° S	2026-04-03 13:39:55.450Z	84.27° E	37.524°	2026-04-03 13:46:55.450Z	19.281° NNE
13 mins	2026-04-03 15:28:55.450Z	233.227° WSW	2026-04-03 15:34:55.450Z	291.2° WNW	28.773°	2026-04-03 15:41:55.450Z	350.214° N
9 mins	2026-04-03 23:34:55.450Z	29.724° NE	2026-04-03 23:38:55.450Z	62.32° ENE	18.373°	2026-04-03 23:43:55.450Z	102.636° ESE
15 mins	2026-04-04 01:27:55.450Z	350.79° N	2026-04-04 01:34:55.450Z	279.068° WNW	44.837°	2026-04-04 01:42:55.450Z	178.108° S
6 mins	2026-04-04 03:25:55.450Z	303.17° NW	2026-04-04 03:28:55.450Z	279.762° WNW	14.237°	2026-04-04 03:31:55.450Z	257.356° W

Items per page:

1–5 of 5 items

of 1 page

Co-orbital & Co-planar RSOs

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

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

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

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-04-02T22:53:51.673Z)

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: 7 hours ago