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, 0.8 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 2167
1 21781U 91077C 26125.85118920 .00000036 00000-0 13617-3 0 9993
2 21781 82.6029 267.7281 0007284 170.4145 357.2676 12.64291179590590Epoch: 2026-05-05T20:25Z
TLE epoch observation values (Epoch: 2026-05-05T20:25:42.746Z)
Latitude
12.1788°
Longitude
-84.01775°
Altitude
1,401.603 km
Speed
7.163 km/s
True Right ascension
05h 44m 31s
True Declination
12° 06' 50"
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
22:22:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.267 km
Perigee altitude
1,396.932 km
Semi-major axis
7,780.736 km
Eccentricity
0.00073
Inclination
82.6029°
RAAN
267.7281°
Arg. of periapsis
170.4145°
True anomaly
357.26362°
Mean anomaly
357.2676°
Eccentric anomaly
357.26561°
Mean motion
3.16237 °/min
Orbital period
113.84 mins
BSTAR
0.00013617
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-05-06 20:51:03.706Z | 0.58° NNE | 2026-05-06 20:58:03.706Z | 80.394° E | 41.797° | 2026-05-06 21:06:03.706Z | 159.839° S |
| 11 mins | 2026-05-06 22:47:03.706Z | 322.244° NNW | 2026-05-06 22:52:03.706Z | 278.898° WNW | 23.254° | 2026-05-06 22:58:03.706Z | 229.138° WSW |
| 14 mins | 2026-05-07 09:38:03.706Z | 167.151° S | 2026-05-07 09:44:03.706Z | 103.531° ESE | 41.631° | 2026-05-07 09:52:03.706Z | 14.583° NNE |
| 11 mins | 2026-05-07 11:35:03.706Z | 247.861° W | 2026-05-07 11:40:03.706Z | 294.586° NW | 24.107° | 2026-05-07 11:46:03.706Z | 343.976° N |
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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