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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Edit Public Description
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, 0.8 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 COSMOS 1911
1 18790U 88002C 25259.97062192 .00000045 00000-0 18849-3 0 9994
2 18790 82.6053 62.8320 0007831 40.7578 76.8768 12.64375542738427Epoch: 2025-09-16T23:17Z
TLE epoch observation values (Epoch: 2025-09-16T23:17:41.733Z)
Latitude
61.47093°
Longitude
-116.48791°
Altitude
1,414.031 km
Speed
7.16 km/s
True Right ascension
15h 16m 21s
True Declination
61° 20' 19"
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
09:38:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.346 km
Perigee altitude
1,396.16 km
Semi-major axis
7,780.39 km
Eccentricity
0.00078
Inclination
82.6053°
RAAN
62.832°
Arg. of periapsis
40.7578°
True anomaly
76.96421°
Mean anomaly
76.8768°
Eccentric anomaly
76.9205°
Mean motion
3.16258 °/min
Orbital period
113.83 mins
BSTAR
0.00018849
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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 | 2025-09-17 22:03:38.265Z | 2.524° NNE | 2025-09-17 22:11:38.265Z | 78.461° E | 37.28° | 2025-09-17 22:18:38.265Z | 147.84° SSE |
| 12 mins | 2025-09-18 00:00:38.265Z | 326.891° NNW | 2025-09-18 00:05:38.265Z | 279.98° WNW | 28.704° | 2025-09-18 00:12:38.265Z | 217.311° SW |
| 14 mins | 2025-09-18 10:51:38.265Z | 156.607° SSE | 2025-09-18 10:57:38.265Z | 98.748° ESE | 36.834° | 2025-09-18 11:05:38.265Z | 18.891° NNE |
| 12 mins | 2025-09-18 12:47:38.265Z | 234.117° WSW | 2025-09-18 12:52:38.265Z | 282.009° WNW | 29.113° | 2025-09-18 12:59:38.265Z | 347.787° N |
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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