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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 COSMOS 249 DEB
1 03874U 68091BH 26174.79827389 .00002596 00000-0 24435-2 0 9991
2 03874 62.2559 319.7709 0612300 192.9606 165.5033 13.20820731701541Epoch: 2026-06-23T19:09Z
TLE epoch observation values (Epoch: 2026-06-23T19:09:30.864Z)
Latitude
0.00001°
Longitude
120.42763°
Altitude
1,633.039 km
Speed
6.843 km/s
True Right ascension
21h 19m 05s
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
16:39:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,643.386 km
Perigee altitude
717.747 km
Semi-major axis
7,558.704 km
Eccentricity
0.06123
Inclination
62.2559°
RAAN
319.7709°
Arg. of periapsis
192.9606°
True anomaly
167.138°
Mean anomaly
165.5033°
Eccentric anomaly
166.33226°
Mean motion
3.30272 °/min
Orbital period
109 mins
BSTAR
0.0024435
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-06-24 09:47:16.547Z | 154.493° SSE | 2026-06-24 09:54:16.547Z | 106.874° ESE | 22.342° | 2026-06-24 10:00:16.547Z | 63.602° ENE |
| 16 mins | 2026-06-24 11:38:16.547Z | 213.294° SW | 2026-06-24 11:46:16.547Z | 222.178° SW | 44.976° | 2026-06-24 11:54:16.547Z | 35.703° NE |
| 13 mins | 2026-06-24 13:34:16.547Z | 272.853° WNW | 2026-06-24 13:40:16.547Z | 321.321° NNW | 27.04° | 2026-06-24 13:47:16.547Z | 21.386° NNE |
| 6 mins | 2026-06-24 15:33:16.547Z | 325.956° NNW | 2026-06-24 15:36:16.547Z | 348.172° N | 13.853° | 2026-06-24 15:39:16.547Z | 12.284° NNE |
| 6 mins | 2026-06-24 17:30:16.547Z | 354.255° N | 2026-06-24 17:33:16.547Z | 21.735° NNE | 15.623° | 2026-06-24 17:36:16.547Z | 50.414° ENE |
| 10 mins | 2026-06-24 19:22:16.547Z | 335.16° NNW | 2026-06-24 19:28:16.547Z | 58.513° ENE | 36.085° | 2026-06-24 19:32:16.547Z | 115.013° SE |
| 8 mins | 2026-06-24 21:16:16.547Z | 297.105° NW | 2026-06-24 21:20:16.547Z | 245.858° WSW | 25.316° | 2026-06-24 21:24:16.547Z | 193.851° 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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