COSMOS 249 DEB *, 3908
Orbit data source: Space-Track
COSMOS 249 DEB *, 3908 is space debris in LEO originally from a launch on Sun, 20 Oct 1968 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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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Edit Public Description
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: 16 hours ago
TLE from 16 hours ago
0 COSMOS 249 DEB *
1 3908U 68091BL 25333.71189325 .00000554 00000-0 46777-3 0 9994
2 3908 63.3413 118.9462 0584040 30.8659 68.4358 13.36125319754830Epoch: 2025-11-29T17:05Z
TLE epoch observation values (Epoch: 2025-11-29T17:05:07.576Z)
Latitude
59.48552°
Longitude
-84.09901°
Altitude
994.51 km
Speed
7.428 km/s
True Right ascension
16h 04m 04s
True Declination
59° 20' 23"
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
06:44:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,560.656 km
Perigee altitude
684.512 km
Semi-major axis
7,500.721 km
Eccentricity
0.0584
Inclination
63.3413°
RAAN
118.9462°
Arg. of periapsis
30.8659°
True anomaly
74.81812°
Mean anomaly
68.4358°
Eccentric anomaly
71.61123°
Mean motion
3.34109 °/min
Orbital period
107.75 mins
BSTAR
0.00046777
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Other satellites on launch #91 in the year 1968 (1968-10-20 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 249 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-11-30 10:42:04.544Z | 156.503° SSE | 2025-11-30 10:45:04.544Z | 107.869° ESE | 21.628° | 2025-11-30 10:48:04.544Z | 64.789° ENE |
| 7 mins | 2025-11-30 12:33:04.544Z | 257.856° W | 2025-11-30 12:36:04.544Z | 324.979° NNW | 30.901° | 2025-11-30 12:40:04.544Z | 19.327° NNE |
| 7 mins | 2025-11-30 18:15:04.544Z | 10.728° NNE | 2025-11-30 18:17:04.544Z | 32.637° NE | 18.108° | 2025-11-30 18:22:04.544Z | 77.831° E |
| 13 mins | 2025-11-30 20:04:04.544Z | 330.843° NNW | 2025-11-30 20:10:04.544Z | 82.381° E | 43.665° | 2025-11-30 20:17:04.544Z | 139.654° SSE |
| 10 mins | 2025-11-30 21:57:04.544Z | 285.318° WNW | 2025-11-30 22:01:04.544Z | 244.327° WSW | 22.414° | 2025-11-30 22:07:04.544Z | 199.152° 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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