COSMOS 1275 DEB, 39958
Orbit data source: Space-Track
COSMOS 1275 DEB, 39958 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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39958 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 week ago
TLE from 1 week ago
0 COSMOS 1275 DEB
1 39958U 81053NU 26270.96735338 .00000171 00000-0 15899-3 0 9996
2 39958 83.0274 138.8511 0085249 169.9766 255.5054 13.74717381616842Epoch: 2026-09-27T23:12Z
TLE epoch observation values (Epoch: 2026-09-27T23:12:59.332Z)
Latitude
63.75026°
Longitude
158.13378°
Altitude
1,009.871 km
Speed
7.345 km/s
True Right ascension
10h 12m 32s
True Declination
63° 37' 06"
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
14:57:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,042.555 km
Perigee altitude
917.103 km
Semi-major axis
7,357.966 km
Eccentricity
0.00852
Inclination
83.0274°
RAAN
138.8511°
Arg. of periapsis
169.9766°
True anomaly
254.56217°
Mean anomaly
255.5054°
Eccentric anomaly
255.03353°
Mean motion
3.4388 °/min
Orbital period
104.69 mins
BSTAR
0.00015899
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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 | 2026-10-07 01:50:12.025Z | 4.15° NNE | 2026-10-07 01:55:12.025Z | 71.216° E | 53.353° | 2026-10-07 02:01:12.025Z | 156.456° SSE |
| 6 mins | 2026-10-07 03:38:12.025Z | 304.171° NW | 2026-10-07 03:40:12.025Z | 279.542° WNW | 19.776° | 2026-10-07 03:44:12.025Z | 234.764° WSW |
| 6 mins | 2026-10-07 13:38:12.025Z | 109.094° ESE | 2026-10-07 13:40:12.025Z | 87.167° E | 18.484° | 2026-10-07 13:44:12.025Z | 44.946° NE |
| 11 mins | 2026-10-07 15:20:12.025Z | 199.689° SSW | 2026-10-07 15:25:12.025Z | 264.063° W | 63.267° | 2026-10-07 15:31:12.025Z | 359.668° N |
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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