COSMOS 1275 DEB, 12739
Orbit data source: Space-Track
COSMOS 1275 DEB, 12739 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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12739 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 12739U 81053CG 26149.79835888 .00006589 00000-0 18391-2 0 9999
2 12739 82.9316 288.5157 0006373 198.1498 161.9472 14.46141419302907Epoch: 2026-05-29T19:09Z
TLE epoch observation values (Epoch: 2026-05-29T19:09:38.207Z)
Latitude
0.00007°
Longitude
113.78294°
Altitude
745.591 km
Speed
7.48 km/s
True Right ascension
19h 14m 03s
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
22:00:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
739.864 km
Perigee altitude
730.797 km
Semi-major axis
7,113.468 km
Eccentricity
0.00064
Inclination
82.9316°
RAAN
288.5157°
Arg. of periapsis
198.1498°
True anomaly
161.96981°
Mean anomaly
161.9472°
Eccentric anomaly
161.95851°
Mean motion
3.6176 °/min
Orbital period
99.51 mins
BSTAR
0.0018391
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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 | 2026-05-30 20:37:55.348Z | 6.787° NNE | 2026-05-30 20:42:55.348Z | 91.068° ESE | 34.394° | 2026-05-30 20:46:55.348Z | 149.265° SSE |
| 4 mins | 2026-05-30 22:20:55.348Z | 298.204° NW | 2026-05-30 22:22:55.348Z | 268.246° W | 17.466° | 2026-05-30 22:24:55.348Z | 241.257° WSW |
| 8 mins | 2026-05-31 09:28:55.348Z | 160.317° S | 2026-05-31 09:31:55.348Z | 106.705° ESE | 37.232° | 2026-05-31 09:36:55.348Z | 18.469° NNE |
| 5 mins | 2026-05-31 11:10:55.348Z | 261.931° W | 2026-05-31 11:12:55.348Z | 289.496° WNW | 16.354° | 2026-05-31 11:15:55.348Z | 327.564° NNW |
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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