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: 23 hours ago
TLE from 23 hours ago
0 COSMOS 1275 DEB
1 39957U 81053NT 26145.51786465 .00000057 00000-0 44345-4 0 9996
2 39957 82.9272 232.1562 0037598 16.4397 1.0924 13.74678493600530Epoch: 2026-05-25T12:25Z
TLE epoch observation values (Epoch: 2026-05-25T12:25:43.505Z)
Latitude
17.39131°
Longitude
164.83598°
Altitude
957.454 km
Speed
7.388 km/s
True Right ascension
15h 37m 29s
True Declination
17° 17' 46"
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
20:12:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,007.637 km
Perigee altitude
952.307 km
Semi-major axis
7,358.109 km
Eccentricity
0.00376
Inclination
82.9272°
RAAN
232.1562°
Arg. of periapsis
16.4397°
True anomaly
1.10065°
Mean anomaly
1.0924°
Eccentric anomaly
1.09652°
Mean motion
3.4387 °/min
Orbital period
104.69 mins
BSTAR
0.000044345
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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 | 2026-05-26 16:52:48.012Z | 12.501° NNE | 2026-05-26 16:57:48.012Z | 78.148° E | 32.189° | 2026-05-26 17:02:48.012Z | 140.664° SSE |
| 9 mins | 2026-05-26 18:38:48.012Z | 325.815° NNW | 2026-05-26 18:42:48.012Z | 277.859° WNW | 27.028° | 2026-05-26 18:47:48.012Z | 217.972° SW |
| 11 mins | 2026-05-27 06:22:48.012Z | 184.879° SSW | 2026-05-27 06:27:48.012Z | 37.184° NE | 44.987° | 2026-05-27 06:33:48.012Z | 7.378° 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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