COSMOS 1275 DEB, 39961
Orbit data source: Space-Track
COSMOS 1275 DEB, 39961 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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39961 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, 0.050 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 5 days ago
TLE from 5 days ago
0 COSMOS 1275 DEB
1 39961U 81053NX 26274.92729463 .00000820 00000-0 57828-3 0 9991
2 39961 82.7648 129.4732 0054111 350.8234 72.4110 13.96251812625387Epoch: 2026-10-01T22:15Z
TLE epoch observation values (Epoch: 2026-10-01T22:15:18.256Z)
Latitude
63.00353°
Longitude
159.34333°
Altitude
905.912 km
Speed
7.411 km/s
True Right ascension
09h 35m 18s
True Declination
62° 52' 01"
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
14:58:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
943.334 km
Perigee altitude
864.526 km
Semi-major axis
7,282.067 km
Eccentricity
0.00541
Inclination
82.7648°
RAAN
129.4732°
Arg. of periapsis
350.8234°
True anomaly
73.00328°
Mean anomaly
72.411°
Eccentric anomaly
72.70702°
Mean motion
3.4927 °/min
Orbital period
103.07 mins
BSTAR
0.00057828
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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 | 2026-10-07 00:38:33.084Z | 21.705° NNE | 2026-10-07 00:42:33.084Z | 65.479° ENE | 23.719° | 2026-10-07 00:47:33.084Z | 122.561° SE |
| 10 mins | 2026-10-07 02:22:33.084Z | 337.327° NNW | 2026-10-07 02:27:33.084Z | 256.057° W | 48.242° | 2026-10-07 02:32:33.084Z | 197.388° SSW |
| 9 mins | 2026-10-07 13:56:33.084Z | 152.069° SSE | 2026-10-07 14:00:33.084Z | 91.24° ESE | 41.243° | 2026-10-07 14:05:33.084Z | 23.623° NE |
| 7 mins | 2026-10-07 15:41:33.084Z | 244.83° WSW | 2026-10-07 15:44:33.084Z | 285.697° WNW | 25.732° | 2026-10-07 15:48:33.084Z | 336.583° NNW |
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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