COSMOS 2155, 21702
Orbit data source: Space-Track
COSMOS 2155, 21702 is a payload satellite owned by PVO (CIS) in GEO that was launched on Fri, 13 Sep 1991 UTC via a PROTON-K/DM-2 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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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21702 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
NPOL/KOMET
Mission
Non-operational Defense Early Warn
Bus & Motor
OKO, Unknown motor
Mass
~1,250 kg wet, ~1,150 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 2.5 m
Radar Cross Section
6.333 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 COSMOS 2155
1 21702U 91064A 26121.73995492 .00000105 00000-0 00000+0 0 9997
2 21702 13.1597 339.6137 0002288 261.6996 91.0490 1.00191595126868Epoch: 2026-05-01T17:45Z
TLE epoch observation values (Epoch: 2026-05-01T17:45:32.105Z)
Latitude
-1.62615°
Longitude
-153.46912°
Altitude
35,809.087 km
Speed
3.074 km/s
True Right ascension
22h 10m 19s
True Declination
-1° 37' 28"
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
07:48:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,819.731 km
Perigee altitude
35,800.426 km
Semi-major axis
42,188.216 km
Eccentricity
0.00023
Inclination
13.1597°
RAAN
339.6137°
Arg. of periapsis
261.6996°
True anomaly
91.07521°
Mean anomaly
91.049°
Eccentric anomaly
91.06211°
Mean motion
0.25047 °/min
Orbital period
1,437.3 mins
BSTAR
0
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Other satellites on launch #64 in the year 1991 (1991-09-13 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 2155 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. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2026-05-02 00:09:22.937Z | 251.981° W | 2026-05-02 00:42:22.937Z | 251.702° W | 28.253° | 2026-05-03 00:09:22.937Z | 252.212° W |
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21702 neighbors
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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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