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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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: 19 hours ago
TLE from 19 hours ago
0 COSMOS 249 DEB
1 03874U 68091BH 25289.25352629 .00001847 00000-0 16706-2 0 9998
2 03874 62.2478 245.1056 0636198 136.3418 228.9771 13.19511678668463Epoch: 2025-10-16T06:05Z
TLE epoch observation values (Epoch: 2025-10-16T06:05:04.671Z)
Latitude
0.00003°
Longitude
128.82025°
Altitude
1,520.535 km
Speed
6.948 km/s
True Right ascension
16h 20m 25s
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
19:50:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,666.768 km
Perigee altitude
704.366 km
Semi-major axis
7,563.704 km
Eccentricity
0.06362
Inclination
62.2478°
RAAN
245.1056°
Arg. of periapsis
136.3418°
True anomaly
223.75749°
Mean anomaly
228.9771°
Eccentric anomaly
226.34002°
Mean motion
3.29945 °/min
Orbital period
109.11 mins
BSTAR
0.0016706
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-17 06:16:13.833Z | 350.009° N | 2025-10-17 06:20:13.833Z | 47.405° ENE | 20.847° | 2025-10-17 06:23:13.833Z | 88.702° E |
| 8 mins | 2025-10-17 08:09:13.833Z | 308.425° NW | 2025-10-17 08:12:13.833Z | 258.658° W | 35.84° | 2025-10-17 08:17:13.833Z | 166.987° S |
| 13 mins | 2025-10-17 22:12:13.833Z | 190.759° SSW | 2025-10-17 22:19:13.833Z | 118.692° SE | 38.399° | 2025-10-17 22:25:13.833Z | 47.107° ENE |
| 11 mins | 2025-10-18 00:06:13.833Z | 252.755° W | 2025-10-18 00:12:13.833Z | 314.703° NW | 30.84° | 2025-10-18 00:17:13.833Z | 17.192° NNE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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