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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3908 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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 249 DEB *
1 03908U 68091BL 26235.25881381 .00001196 00000-0 86726-3 0 9997
2 03908 63.3394 158.8244 0602555 33.8266 119.4765 13.36610611790459Epoch: 2026-08-23T06:12Z
TLE epoch observation values (Epoch: 2026-08-23T06:12:41.513Z)
Latitude
18.61274°
Longitude
-95.5928°
Altitude
1,365.31 km
Speed
7.061 km/s
True Right ascension
21h 56m 33s
True Declination
18° 31' 02"
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
02:28:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,572.618 km
Perigee altitude
668.917 km
Semi-major axis
7,498.904 km
Eccentricity
0.06026
Inclination
63.3394°
RAAN
158.8244°
Arg. of periapsis
33.8266°
True anomaly
125.26259°
Mean anomaly
119.4765°
Eccentric anomaly
122.39171°
Mean motion
3.34231 °/min
Orbital period
107.71 mins
BSTAR
0.00086726
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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 | 2026-08-24 19:18:15.340Z | 141.165° SSE | 2026-08-24 19:20:15.340Z | 114.984° SE | 13.825° | 2026-08-24 19:22:15.340Z | 86.846° E |
| 7 mins | 2026-08-24 21:08:15.340Z | 237.667° WSW | 2026-08-24 21:11:15.340Z | 319.094° NNW | 39.011° | 2026-08-24 21:15:15.340Z | 24.546° NE |
| 5 mins | 2026-08-25 02:50:15.340Z | 11.862° NNE | 2026-08-25 02:52:15.340Z | 32.254° NE | 14.044° | 2026-08-25 02:55:15.340Z | 59.546° ENE |
| 12 mins | 2026-08-25 04:40:15.340Z | 340.816° N | 2026-08-25 04:44:15.340Z | 36.747° NE | 39.251° | 2026-08-25 04:52:15.340Z | 128.803° SE |
| 11 mins | 2026-08-25 06:31:15.340Z | 298.223° NW | 2026-08-25 06:36:15.340Z | 240.702° WSW | 28.629° | 2026-08-25 06:42:15.340Z | 189.364° 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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