COSMOS 2148, 21304
Orbit data source: Space-Track
COSMOS 2148, 21304 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Thu, 16 May 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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21304 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: 9 hours ago
TLE from 9 hours ago
0 COSMOS 2148
1 21304U 91033F 25273.50093514 .00000053 00000-0 22533-3 0 9998
2 21304 82.5689 76.9928 0023345 184.0043 231.3760 12.65983877588243Epoch: 2025-09-30T12:01Z
TLE epoch observation values (Epoch: 2025-09-30T12:01:20.796Z)
Latitude
54.57777°
Longitude
-102.31923°
Altitude
1,418.649 km
Speed
7.151 km/s
True Right ascension
05h 50m 01s
True Declination
54° 25' 44"
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
14:43:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,413.807 km
Perigee altitude
1,377.511 km
Semi-major axis
7,773.796 km
Eccentricity
0.00233
Inclination
82.5689°
RAAN
76.9928°
Arg. of periapsis
184.0043°
True anomaly
231.16738°
Mean anomaly
231.376°
Eccentric anomaly
231.27165°
Mean motion
3.1666 °/min
Orbital period
113.69 mins
BSTAR
0.00022533
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Other satellites on launch #33 in the year 1991 (1991-05-16 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 2148 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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2025-09-30 21:48:52.225Z | 8.027° NNE | 2025-09-30 21:55:52.225Z | 67.276° ENE | 30.412° | 2025-09-30 22:02:52.225Z | 134.157° SE |
| 13 mins | 2025-09-30 23:44:52.225Z | 335.813° NNW | 2025-09-30 23:50:52.225Z | 273.837° WNW | 35.55° | 2025-09-30 23:57:52.225Z | 204.476° SW |
| 12 mins | 2025-10-01 10:36:52.225Z | 138.403° SSE | 2025-10-01 10:41:52.225Z | 90.196° ESE | 29.844° | 2025-10-01 10:48:52.225Z | 26.618° NE |
| 14 mins | 2025-10-01 12:29:52.225Z | 215.27° SW | 2025-10-01 12:36:52.225Z | 289.784° WNW | 36.343° | 2025-10-01 12:43:52.225Z | 355.062° N |
| 4 mins | 2025-10-01 20:38:52.225Z | 50.492° ENE | 2025-10-01 20:39:52.225Z | 58.097° ENE | 12.129° | 2025-10-01 20:42:52.225Z | 80.316° E |
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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