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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18790 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 0.9 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 1911
1 18790U 88002C 26306.89577574 .00000019 00000-0 43468-4 0 9991
2 18790 82.6085 160.0700 0007170 170.4940 200.8321 12.64387581790489Epoch: 2026-11-02T21:29Z
TLE epoch observation values (Epoch: 2026-11-02T21:29:55.023Z)
Latitude
11.15704°
Longitude
156.88337°
Altitude
1,412.088 km
Speed
7.153 km/s
True Right ascension
10h 46m 06s
True Declination
11° 05' 51"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
00:23:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,407.782 km
Perigee altitude
1,396.625 km
Semi-major axis
7,780.34 km
Eccentricity
0.00072
Inclination
82.6085°
RAAN
160.07°
Arg. of periapsis
170.494°
True anomaly
200.80291°
Mean anomaly
200.8321°
Eccentric anomaly
200.8175°
Mean motion
3.16261 °/min
Orbital period
113.83 mins
BSTAR
0.000043468
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Other satellites on launch #2 in the year 1988 (1988-01-15 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-11-03 14:37:03.703Z | 168.665° S | 2026-11-03 14:44:03.703Z | 105.909° ESE | 61.748° | 2026-11-03 14:52:03.703Z | 14.912° NNE |
| 12 mins | 2026-11-03 16:34:03.703Z | 241.158° WSW | 2026-11-03 16:40:03.703Z | 293.744° NW | 26.995° | 2026-11-03 16:46:03.703Z | 343.696° N |
| 11 mins | 2026-11-04 00:39:03.703Z | 22.081° NNE | 2026-11-04 00:44:03.703Z | 64.245° ENE | 24.138° | 2026-11-04 00:50:03.703Z | 114.953° SE |
| 15 mins | 2026-11-04 02:33:03.703Z | 346.041° N | 2026-11-04 02:40:03.703Z | 258.353° W | 68.889° | 2026-11-04 02:48:03.703Z | 186.201° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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