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: 8 hours ago
TLE from 8 hours ago
0 COSMOS 1275 DEB
1 12739U 81053CG 26236.40234823 .00003165 00000-0 86909-3 0 9994
2 12739 82.9311 216.2036 0003327 330.9345 29.1665 14.46813469315420Epoch: 2026-08-24T09:39Z
TLE epoch observation values (Epoch: 2026-08-24T09:39:22.887Z)
Latitude
-0.00003°
Longitude
98.67367°
Altitude
737.007 km
Speed
7.488 km/s
True Right ascension
14h 24m 48s
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
09:04:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
735.492 km
Perigee altitude
730.76 km
Semi-major axis
7,111.263 km
Eccentricity
0.00033
Inclination
82.9311°
RAAN
216.2036°
Arg. of periapsis
330.9345°
True anomaly
29.18509°
Mean anomaly
29.1665°
Eccentric anomaly
29.17579°
Mean motion
3.61929 °/min
Orbital period
99.47 mins
BSTAR
0.00086909
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-08-24 23:03:01.700Z | 162.267° S | 2026-08-24 23:07:01.700Z | 94.647° ESE | 36.522° | 2026-08-24 23:11:01.700Z | 22.171° NNE |
| 4 mins | 2026-08-25 00:46:01.700Z | 265.376° W | 2026-08-25 00:48:01.700Z | 294.521° NW | 16.754° | 2026-08-25 00:50:01.700Z | 321.295° NNW |
| 5 mins | 2026-08-25 09:29:01.700Z | 38.32° NE | 2026-08-25 09:31:01.700Z | 65.515° ENE | 17.408° | 2026-08-25 09:34:01.700Z | 107.292° ESE |
| 7 mins | 2026-08-25 11:09:01.700Z | 330.542° NNW | 2026-08-25 11:12:01.700Z | 265.131° W | 35.683° | 2026-08-25 11:16:01.700Z | 199.1° SSW |
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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