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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 COSMOS 1275 DEB
1 39956U 81053NS 26236.40309898 .00000846 00000-0 79776-3 0 9996
2 39956 83.0154 222.7538 0123121 100.4502 261.0557 13.76803663611698Epoch: 2026-08-24T09:40Z
TLE epoch observation values (Epoch: 2026-08-24T09:40:27.751Z)
Latitude
-0.00004°
Longitude
104.95286°
Altitude
993.314 km
Speed
7.347 km/s
True Right ascension
14h 51m 00s
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
17:30:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,062.889 km
Perigee altitude
881.888 km
Semi-major axis
7,350.526 km
Eccentricity
0.01231
Inclination
83.0154°
RAAN
222.7538°
Arg. of periapsis
100.4502°
True anomaly
259.66546°
Mean anomaly
261.0557°
Eccentric anomaly
260.36023°
Mean motion
3.44402 °/min
Orbital period
104.53 mins
BSTAR
0.00079776
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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 | 2026-08-25 10:39:44.209Z | 2.113° NNE | 2026-08-25 10:45:44.209Z | 99.272° ESE | 39.16° | 2026-08-25 10:50:44.209Z | 157.395° SSE |
| 6 mins | 2026-08-25 12:27:44.209Z | 305.134° NW | 2026-08-25 12:29:44.209Z | 281.314° WNW | 17.48° | 2026-08-25 12:33:44.209Z | 236.819° WSW |
| 5 mins | 2026-08-25 22:27:44.209Z | 106.376° ESE | 2026-08-25 22:29:44.209Z | 82.798° E | 16.787° | 2026-08-25 22:32:44.209Z | 49.256° ENE |
| 10 mins | 2026-08-26 00:09:44.209Z | 202.122° SSW | 2026-08-26 00:14:44.209Z | 290.543° WNW | 40.887° | 2026-08-26 00:19:44.209Z | 358.281° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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