COSMOS 1275 DEB, 39956
Orbit data source: Space-Track
COSMOS 1275 DEB, 39956 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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39956 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: 19 hours ago
TLE from 19 hours ago
0 COSMOS 1275 DEB
1 39956U 81053NS 26119.24485701 .00001440 00000-0 13787-2 0 9996
2 39956 83.0156 308.9190 0120223 69.6996 291.7034 13.76566447595578Epoch: 2026-04-29T05:52Z
TLE epoch observation values (Epoch: 2026-04-29T05:52:35.645Z)
Latitude
-0.00003°
Longitude
3.56188°
Altitude
947.216 km
Speed
7.394 km/s
True Right ascension
20h 35m 40s
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
08:46:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,061.614 km
Perigee altitude
884.853 km
Semi-major axis
7,351.371 km
Eccentricity
0.01202
Inclination
83.0156°
RAAN
308.919°
Arg. of periapsis
69.6996°
True anomaly
290.41636°
Mean anomaly
291.7034°
Eccentric anomaly
291.06059°
Mean motion
3.44343 °/min
Orbital period
104.55 mins
BSTAR
0.0013787
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-04-30 01:39:41.455Z | 323.537° NNW | 2026-04-30 01:43:41.455Z | 276.515° WNW | 23.564° | 2026-04-30 01:48:41.455Z | 220.951° SW |
| 10 mins | 2026-04-30 13:23:41.455Z | 190.758° SSW | 2026-04-30 13:27:41.455Z | 226.117° WSW | 43.978° | 2026-04-30 13:33:41.455Z | 4.633° NNE |
| 10 mins | 2026-05-01 00:19:41.455Z | 356.75° N | 2026-05-01 00:24:41.455Z | 120.011° SE | 44.252° | 2026-05-01 00:29:41.455Z | 169.465° S |
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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