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, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 COSMOS 1275 DEB
1 18639U 81053LZ 26103.43625184 .00000938 00000-0 10036-2 0 9991
2 18639 83.0632 185.9451 0136898 332.7943 145.4822 13.68960623 29427Epoch: 2026-04-13T10:28Z
TLE epoch observation values (Epoch: 2026-04-13T10:28:12.158Z)
Latitude
60.19508°
Longitude
-4.93165°
Altitude
1,097.266 km
Speed
7.268 km/s
True Right ascension
23h 34m 59s
True Declination
60° 03' 12"
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
06:12:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,101.468 km
Perigee altitude
899.445 km
Semi-major axis
7,378.594 km
Eccentricity
0.01369
Inclination
83.0632°
RAAN
185.9451°
Arg. of periapsis
332.7943°
True anomaly
146.35874°
Mean anomaly
145.4822°
Eccentric anomaly
145.9217°
Mean motion
3.42439 °/min
Orbital period
105.13 mins
BSTAR
0.0010036
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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 | 2026-04-15 05:50:38.104Z | 176.131° S | 2026-04-15 05:55:38.104Z | 128.038° SE | 43.006° | 2026-04-15 06:01:38.104Z | 11.8° NNE |
| 5 mins | 2026-04-15 07:40:38.104Z | 269.346° W | 2026-04-15 07:42:38.104Z | 291.275° WNW | 15.817° | 2026-04-15 07:45:38.104Z | 322.822° NNW |
| 12 mins | 2026-04-15 16:51:38.104Z | 2.608° NNE | 2026-04-15 16:56:38.104Z | 66.574° ENE | 41.64° | 2026-04-15 17:03:38.104Z | 161.47° S |
| 8 mins | 2026-04-15 18:38:38.104Z | 315.239° NNW | 2026-04-15 18:42:38.104Z | 273.572° WNW | 20.006° | 2026-04-15 18:46:38.104Z | 235.227° WSW |
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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