COSMOS 249 DEB, 3874
Orbit data source: Space-Track
COSMOS 249 DEB, 3874 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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3874 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: 4 hours ago
TLE from 4 hours ago
0 COSMOS 249 DEB
1 3874U 68091BH 26129.82547958 .00000852 00000-0 85535-3 0 9998
2 3874 62.2525 75.6714 0614113 182.8007 176.9501 13.20667343695608Epoch: 2026-05-09T19:48Z
TLE epoch observation values (Epoch: 2026-05-09T19:48:41.435Z)
Latitude
-0.00004°
Longitude
-89.13862°
Altitude
1,647.561 km
Speed
6.83 km/s
True Right ascension
05h 02m 41s
True Declination
0° 00' 00"
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
07:55:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,645.378 km
Perigee altitude
716.927 km
Semi-major axis
7,559.289 km
Eccentricity
0.06141
Inclination
62.2525°
RAAN
75.6714°
Arg. of periapsis
182.8007°
True anomaly
177.29779°
Mean anomaly
176.9501°
Eccentric anomaly
177.12649°
Mean motion
3.30234 °/min
Orbital period
109.01 mins
BSTAR
0.00085535
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-05-09 23:44:38.474Z | 305.244° NW | 2026-05-09 23:45:38.474Z | 322.321° NNW | 35.014° | 2026-05-09 23:52:38.474Z | 25.486° NE |
| 8 mins | 2026-05-10 01:36:38.474Z | 309.607° NW | 2026-05-10 01:40:38.474Z | 340.961° N | 16.054° | 2026-05-10 01:44:38.474Z | 13.898° NNE |
| 8 mins | 2026-05-10 05:28:38.474Z | 350.11° N | 2026-05-10 05:32:38.474Z | 39.404° NE | 24.102° | 2026-05-10 05:36:38.474Z | 88.836° E |
| 10 mins | 2026-05-10 07:20:38.474Z | 316.348° NNW | 2026-05-10 07:25:38.474Z | 240.415° WSW | 40.979° | 2026-05-10 07:30:38.474Z | 161.436° S |
| 15 mins | 2026-05-10 21:21:38.474Z | 184.564° SSW | 2026-05-10 21:28:38.474Z | 125.052° SE | 37.88° | 2026-05-10 21:36:38.474Z | 46.858° ENE |
| 15 mins | 2026-05-10 23:14:38.474Z | 244.557° WSW | 2026-05-10 23:22:38.474Z | 321.722° NNW | 36.871° | 2026-05-10 23:29:38.474Z | 26.185° NE |
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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