COSMOS 1275 DEB, 39957
Orbit data source: Space-Track
COSMOS 1275 DEB, 39957 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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39957 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: 3 days ago
TLE from 3 days ago
0 COSMOS 1275 DEB
1 39957U 81053NT 26046.02878912 .00000095 00000-0 84273-4 0 9997
2 39957 82.9272 306.0104 0036286 292.4631 129.0223 13.74663982586862Epoch: 2026-02-15T00:41Z
TLE epoch observation values (Epoch: 2026-02-15T00:41:27.379Z)
Latitude
61.0962°
Longitude
163.52132°
Altitude
1,010.189 km
Speed
7.344 km/s
True Right ascension
21h 15m 42s
True Declination
60° 57' 20"
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
06:08:22
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,006.724 km
Perigee altitude
953.324 km
Semi-major axis
7,358.161 km
Eccentricity
0.00363
Inclination
82.9272°
RAAN
306.0104°
Arg. of periapsis
292.4631°
True anomaly
129.34442°
Mean anomaly
129.0223°
Eccentric anomaly
129.18345°
Mean motion
3.43866 °/min
Orbital period
104.69 mins
BSTAR
0.000084273
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-02-18 04:05:25.564Z | 10.924° NNE | 2026-02-18 04:10:25.564Z | 69.187° E | 31.736° | 2026-02-18 04:16:25.564Z | 142.671° SSE |
| 9 mins | 2026-02-18 05:52:25.564Z | 321.974° NNW | 2026-02-18 05:56:25.564Z | 267.606° W | 27.491° | 2026-02-18 06:01:25.564Z | 214.256° SW |
| 11 mins | 2026-02-18 17:35:25.564Z | 183.832° SSW | 2026-02-18 17:40:25.564Z | 149.315° SSE | 44.909° | 2026-02-18 17:46:25.564Z | 7.795° NNE |
| 4 mins | 2026-02-18 19:25:25.564Z | 278.679° WNW | 2026-02-18 19:27:25.564Z | 299.109° NW | 13.34° | 2026-02-18 19:29:25.564Z | 318.557° NNW |
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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