COSMOS 1275 DEB, 12729
Orbit data source: Space-Track
COSMOS 1275 DEB, 12729 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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12729 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 12729U 81053BW 26235.76711045 .00000334 00000-0 40442-3 0 9994
2 12729 83.0425 50.7524 0126528 309.2469 62.4907 13.60455105 88841Epoch: 2026-08-23T18:24Z
TLE epoch observation values (Epoch: 2026-08-23T18:24:38.342Z)
Latitude
12.89849°
Longitude
164.12725°
Altitude
993.787 km
Speed
7.377 km/s
True Right ascension
03h 29m 22s
True Declination
12° 49' 35"
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
02:12:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,124.952 km
Perigee altitude
937.454 km
Semi-major axis
7,409.34 km
Eccentricity
0.01265
Inclination
83.0425°
RAAN
50.7524°
Arg. of periapsis
309.2469°
True anomaly
63.78602°
Mean anomaly
62.4907°
Eccentric anomaly
63.13742°
Mean motion
3.40309 °/min
Orbital period
105.79 mins
BSTAR
0.00040442
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-08-24 12:05:30.599Z | 170.493° S | 2026-08-24 12:11:30.599Z | 95.449° ESE | 41.418° | 2026-08-24 12:17:30.599Z | 14.756° NNE |
| 8 mins | 2026-08-24 13:55:30.599Z | 255.353° W | 2026-08-24 13:58:30.599Z | 288.229° WNW | 19.544° | 2026-08-24 14:03:30.599Z | 337.747° N |
| 11 mins | 2026-08-24 23:11:30.599Z | 5.164° NNE | 2026-08-24 23:16:30.599Z | 73.884° E | 40.482° | 2026-08-24 23:22:30.599Z | 156.356° SSE |
| 9 mins | 2026-08-25 00:58:30.599Z | 320.083° NNW | 2026-08-25 01:02:30.599Z | 279.999° WNW | 21.805° | 2026-08-25 01:07:30.599Z | 230.461° WSW |
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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