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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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: 11 hours ago
TLE from 11 hours ago
0 COSMOS 2167
1 21781U 91077C 25358.77529828 .00000009 00000-0 -99196-5 0 9993
2 21781 82.6061 352.0199 0007955 113.9855 59.0568 12.64285675573904Epoch: 2025-12-24T18:36Z
TLE epoch observation values (Epoch: 2025-12-24T18:36:25.771Z)
Latitude
6.7523°
Longitude
158.49667°
Altitude
1,404.238 km
Speed
7.16 km/s
True Right ascension
11h 24m 34s
True Declination
6° 42' 56"
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
04:56:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.811 km
Perigee altitude
1,396.432 km
Semi-major axis
7,780.759 km
Eccentricity
0.0008
Inclination
82.6061°
RAAN
352.0199°
Arg. of periapsis
113.9855°
True anomaly
59.13502°
Mean anomaly
59.0568°
Eccentric anomaly
59.09591°
Mean motion
3.16235 °/min
Orbital period
113.84 mins
BSTAR
-0.0000099196
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-25 09:31:41.556Z | 35.377° NE | 2025-12-25 09:34:41.556Z | 57.869° ENE | 13.59° | 2025-12-25 09:38:41.556Z | 87.891° E |
| 14 mins | 2025-12-25 11:24:41.556Z | 357.085° N | 2025-12-25 11:31:41.556Z | 104.444° ESE | 43.982° | 2025-12-25 11:38:41.556Z | 166.599° S |
| 10 mins | 2025-12-25 13:20:41.556Z | 317.223° NNW | 2025-12-25 13:25:41.556Z | 275.49° WNW | 19.254° | 2025-12-25 13:30:41.556Z | 237.324° WSW |
| 4 mins | 2025-12-25 22:22:41.556Z | 87.628° E | 2025-12-25 22:24:41.556Z | 72.596° E | 12.197° | 2025-12-25 22:26:41.556Z | 57.866° ENE |
| 15 mins | 2025-12-26 00:10:41.556Z | 176.653° S | 2025-12-26 00:17:41.556Z | 91.426° ESE | 44.124° | 2025-12-26 00:25:41.556Z | 10.967° NNE |
| 10 mins | 2025-12-26 02:08:41.556Z | 254.628° W | 2025-12-26 02:13:41.556Z | 297.518° NW | 20.317° | 2025-12-26 02:18:41.556Z | 337.785° 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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