COSMOS 1275 DEB, 39939
Orbit data source: Space-Track
COSMOS 1275 DEB, 39939 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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39939 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: 2 weeks ago
TLE from 2 weeks ago
0 COSMOS 1275 DEB
1 39939U 81053MZ 26182.46182199 .00000586 00000-0 55159-3 0 9996
2 39939 82.8180 81.3994 0071018 114.6474 246.2102 13.78675853606710Epoch: 2026-07-01T11:05Z
TLE epoch observation values (Epoch: 2026-07-01T11:05:01.419Z)
Latitude
-0.00007°
Longitude
-4.37475°
Altitude
992.849 km
Speed
7.345 km/s
True Right ascension
05h 25m 35s
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
04:23:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,017.89 km
Perigee altitude
913.581 km
Semi-major axis
7,343.872 km
Eccentricity
0.0071
Inclination
82.818°
RAAN
81.3994°
Arg. of periapsis
114.6474°
True anomaly
245.46822°
Mean anomaly
246.2102°
Eccentric anomaly
245.83894°
Mean motion
3.4487 °/min
Orbital period
104.39 mins
BSTAR
0.00055159
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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 | 2026-07-15 16:34:35.863Z | 190.631° SSW | 2026-07-15 16:39:35.863Z | 239.075° WSW | 44.235° | 2026-07-15 16:45:35.863Z | 4.7° NNE |
| 10 mins | 2026-07-16 03:30:35.863Z | 355.824° N | 2026-07-16 03:35:35.863Z | 118.521° SE | 44.495° | 2026-07-16 03:40:35.863Z | 170.06° S |
| 7 mins | 2026-07-16 15:15:35.863Z | 122.096° SE | 2026-07-16 15:18:35.863Z | 81.816° E | 22.243° | 2026-07-16 15:22:35.863Z | 36.442° NE |
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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