COSMOS 1275 DEB, 18639
Orbit data source: Space-Track
COSMOS 1275 DEB, 18639 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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18639 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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 1275 DEB
1 18639U 81053LZ 26268.21910840 .00001034 00000-0 10956-2 0 9994
2 18639 83.0575 67.0486 0141843 235.7154 187.0294 13.69309440 51978Epoch: 2026-09-25T05:15Z
TLE epoch observation values (Epoch: 2026-09-25T05:15:30.965Z)
Latitude
61.84017°
Longitude
-2.7948°
Altitude
1,116.58 km
Speed
7.248 km/s
True Right ascension
05h 20m 30s
True Declination
61° 42' 13"
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
09:31:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,103.845 km
Perigee altitude
894.56 km
Semi-major axis
7,377.34 km
Eccentricity
0.01418
Inclination
83.0575°
RAAN
67.0486°
Arg. of periapsis
235.7154°
True anomaly
186.83393°
Mean anomaly
187.0294°
Eccentric anomaly
186.93132°
Mean motion
3.42526 °/min
Orbital period
105.1 mins
BSTAR
0.0010956
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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 | 2026-09-26 21:52:49.035Z | 8.028° NNE | 2026-09-26 21:57:49.035Z | 66.161° ENE | 44.392° | 2026-09-26 22:03:49.035Z | 147.846° SSE |
| 9 mins | 2026-09-26 23:39:49.035Z | 322.268° NNW | 2026-09-26 23:43:49.035Z | 275.609° WNW | 26.785° | 2026-09-26 23:48:49.035Z | 221.402° SW |
| 7 mins | 2026-09-27 09:42:49.035Z | 108.227° ESE | 2026-09-27 09:45:49.035Z | 78.828° E | 17.42° | 2026-09-27 09:49:49.035Z | 42.724° NE |
| 11 mins | 2026-09-27 11:25:49.035Z | 193.437° SSW | 2026-09-27 11:30:49.035Z | 280.827° WNW | 76.801° | 2026-09-27 11:36:49.035Z | 3.083° NNE |
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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