COSMOS 2165, 21779
Orbit data source: Space-Track
COSMOS 2165, 21779 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Tue, 12 Nov 1991 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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21779 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, 0.8 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 COSMOS 2165
1 21779U 91077A 26235.35246066 .00000020 00000-0 48241-4 0 9995
2 21779 82.6083 189.3044 0009123 262.2049 264.7749 12.64922746605489Epoch: 2026-08-23T08:27Z
TLE epoch observation values (Epoch: 2026-08-23T08:27:32.601Z)
Latitude
12.97873°
Longitude
-90.9361°
Altitude
1,405.338 km
Speed
7.158 km/s
True Right ascension
00h 30m 23s
True Declination
12° 54' 36"
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
14:58:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,407.103 km
Perigee altitude
1,392.911 km
Semi-major axis
7,778.144 km
Eccentricity
0.00091
Inclination
82.6083°
RAAN
189.3044°
Arg. of periapsis
262.2049°
True anomaly
264.6708°
Mean anomaly
264.7749°
Eccentric anomaly
264.72285°
Mean motion
3.16395 °/min
Orbital period
113.78 mins
BSTAR
0.000048241
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Other satellites on launch #77 in the year 1991 (1991-11-12 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 2165 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-08-24 06:58:51.563Z | 26.103° NE | 2026-08-24 07:03:51.563Z | 64.967° ENE | 16.936° | 2026-08-24 07:07:51.563Z | 96.592° ESE |
| 15 mins | 2026-08-24 08:52:51.563Z | 352.569° N | 2026-08-24 08:59:51.563Z | 174.229° S | 44.917° | 2026-08-24 09:07:51.563Z | 174.927° S |
| 7 mins | 2026-08-24 10:49:51.563Z | 308.284° NW | 2026-08-24 10:52:51.563Z | 284.738° WNW | 15.709° | 2026-08-24 10:56:51.563Z | 253.501° W |
| 7 mins | 2026-08-24 19:48:51.563Z | 101.543° ESE | 2026-08-24 19:51:51.563Z | 77.743° E | 15.641° | 2026-08-24 19:55:51.563Z | 47.081° ENE |
| 14 mins | 2026-08-24 21:38:51.563Z | 184.963° SSW | 2026-08-24 21:45:51.563Z | 9.665° NNE | 44.731° | 2026-08-24 21:52:51.563Z | 7.698° NNE |
| 8 mins | 2026-08-24 23:37:51.563Z | 268.161° W | 2026-08-24 23:40:51.563Z | 292.444° WNW | 17.008° | 2026-08-24 23:45:51.563Z | 332.107° NNW |
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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