COSMOS 2167, 21781
Orbit data source: Space-Track
COSMOS 2167, 21781 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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21781 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: 15 hours ago
TLE from 15 hours ago
0 COSMOS 2167
1 21781U 91077C 26306.03869181 .00000033 00000-0 12044-3 0 9996
2 21781 82.6042 152.7785 0007455 122.8865 30.2268 12.64295741613362Epoch: 2026-11-02T00:55Z
TLE epoch observation values (Epoch: 2026-11-02T00:55:42.972Z)
Latitude
26.63613°
Longitude
-86.18626°
Altitude
1,403.356 km
Speed
7.163 km/s
True Right ascension
21h 56m 15s
True Declination
26° 30' 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
11:16:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.381 km
Perigee altitude
1,396.78 km
Semi-major axis
7,780.718 km
Eccentricity
0.00075
Inclination
82.6042°
RAAN
152.7785°
Arg. of periapsis
122.8865°
True anomaly
30.26984°
Mean anomaly
30.2268°
Eccentric anomaly
30.24832°
Mean motion
3.16238 °/min
Orbital period
113.84 mins
BSTAR
0.00012044
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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 2167 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 | 2026-11-02 15:28:49.820Z | 232.058° WSW | 2026-11-02 15:31:49.820Z | 277.379° WNW | 49.17° | 2026-11-02 15:39:49.820Z | 356.837° N |
| 4 mins | 2026-11-02 23:34:49.820Z | 48.808° ENE | 2026-11-02 23:35:49.820Z | 56.237° ENE | 12.047° | 2026-11-02 23:38:49.820Z | 78.166° E |
| 15 mins | 2026-11-03 01:25:49.820Z | 359.428° N | 2026-11-03 01:32:49.820Z | 85.83° E | 67.672° | 2026-11-03 01:40:49.820Z | 162.632° S |
| 11 mins | 2026-11-03 03:21:49.820Z | 320.419° NNW | 2026-11-03 03:26:49.820Z | 277.594° WNW | 23.646° | 2026-11-03 03:32:49.820Z | 230.405° WSW |
| 15 mins | 2026-11-03 14:11:49.820Z | 171.687° S | 2026-11-03 14:18:49.820Z | 99.83° ESE | 67.557° | 2026-11-03 14:26:49.820Z | 13.159° NNE |
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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