COSMOS 1275 DEB, 39951
Orbit data source: Space-Track
COSMOS 1275 DEB, 39951 is space debris in LEO originally from a launch on Thu, 04 Jun 1981 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
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39951 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 1275 DEB
1 39951U 81053NM 26120.28930117 .00003481 00000-0 16118-2 0 9991
2 39951 82.8219 235.2931 0052547 336.2816 23.5943 14.19866093610365Epoch: 2026-04-30T06:56Z
TLE epoch observation values (Epoch: 2026-04-30T06:56:35.621Z)
Latitude
0.00004°
Longitude
-87.09336°
Altitude
794.1 km
Speed
7.474 km/s
True Right ascension
15h 41m 10s
True Declination
0° 00' 00"
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
19:50:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
860.737 km
Perigee altitude
785.058 km
Semi-major axis
7,201.034 km
Eccentricity
0.00525
Inclination
82.8219°
RAAN
235.2931°
Arg. of periapsis
336.2816°
True anomaly
23.83677°
Mean anomaly
23.5943°
Eccentric anomaly
23.71539°
Mean motion
3.55182 °/min
Orbital period
101.36 mins
BSTAR
0.0016118
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Other satellites on launch #53 in the year 1981 (1981-06-04 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 1275 DEB 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-05-01 19:01:53.350Z | 4.618° NNE | 2026-05-01 19:06:53.350Z | 83.786° E | 38.412° | 2026-05-01 19:11:53.350Z | 154.682° SSE |
| 6 mins | 2026-05-01 20:45:53.350Z | 308.379° NW | 2026-05-01 20:48:53.350Z | 270.227° WNW | 18.291° | 2026-05-01 20:51:53.350Z | 235.893° WSW |
| 9 mins | 2026-05-02 08:06:53.350Z | 178.547° S | 2026-05-02 08:10:53.350Z | 61.38° ENE | 44.039° | 2026-05-02 08:15:53.350Z | 10.235° 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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