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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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: 17 hours ago
TLE from 17 hours ago
0 COSMOS 249 DEB *
1 03908U 68091BL 26080.75027679 .00000259 00000-0 24559-3 0 9997
2 03908 63.3409 193.1850 0592603 32.0361 113.7389 13.36388487769807Epoch: 2026-03-21T18:00Z
TLE epoch observation values (Epoch: 2026-03-21T18:00:23.914Z)
Latitude
25.02473°
Longitude
-89.66751°
Altitude
1,324.893 km
Speed
7.101 km/s
True Right ascension
23h 58m 47s
True Declination
24° 54' 10"
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
16:02:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,566.035 km
Perigee altitude
677.162 km
Semi-major axis
7,499.736 km
Eccentricity
0.05926
Inclination
63.3409°
RAAN
193.185°
Arg. of periapsis
32.0361°
True anomaly
119.76378°
Mean anomaly
113.7389°
Eccentric anomaly
116.77035°
Mean motion
3.34175 °/min
Orbital period
107.73 mins
BSTAR
0.00024559
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-03-22 15:20:21.290Z | 20.275° NNE | 2026-03-22 15:21:21.290Z | 30.114° NE | 12.749° | 2026-03-22 15:24:21.290Z | 56.306° ENE |
| 12 mins | 2026-03-22 17:09:21.290Z | 343.037° N | 2026-03-22 17:14:21.290Z | 58.654° ENE | 36.813° | 2026-03-22 17:21:21.290Z | 123.082° SE |
| 12 mins | 2026-03-22 19:00:21.290Z | 303.216° NW | 2026-03-22 19:05:21.290Z | 243.977° WSW | 32.221° | 2026-03-22 19:12:21.290Z | 181.801° SSW |
| 7 mins | 2026-03-23 08:57:21.290Z | 200.97° SSW | 2026-03-23 09:00:21.290Z | 111.048° ESE | 43.381° | 2026-03-23 09:04:21.290Z | 39.114° NE |
| 5 mins | 2026-03-23 10:50:21.290Z | 299.921° NW | 2026-03-23 10:52:21.290Z | 329.319° NNW | 16.312° | 2026-03-23 10:55:21.290Z | 5.251° NNE |
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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