COSMOS 252 DEB *, 3901
Orbit data source: Space-Track
COSMOS 252 DEB *, 3901 is space debris in LEO originally from a launch on Fri, 01 Nov 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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3901 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: 3 hours ago
TLE from 3 hours ago
0 COSMOS 252 DEB *
1 3901U 68097BN 26122.14936187 .00000772 00000-0 65379-3 0 9994
2 3901 61.2786 282.2254 0808734 226.8168 126.2464 12.95928110671572Epoch: 2026-05-02T03:35Z
TLE epoch observation values (Epoch: 2026-05-02T03:35:04.865Z)
Latitude
-0.00002°
Longitude
8.38371°
Altitude
1,676.033 km
Speed
6.852 km/s
True Right ascension
18h 48m 54s
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
14:39:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,896.311 km
Perigee altitude
658.085 km
Semi-major axis
7,655.335 km
Eccentricity
0.08087
Inclination
61.2786°
RAAN
282.2254°
Arg. of periapsis
226.8168°
True anomaly
133.28043°
Mean anomaly
126.2464°
Eccentric anomaly
129.80608°
Mean motion
3.24039 °/min
Orbital period
111.1 mins
BSTAR
0.00065379
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Other satellites on launch #97 in the year 1968 (1968-11-01 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 252 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. |
|---|---|---|---|---|---|---|---|
| 17 mins | 2026-05-02 11:04:38.607Z | 164.66° S | 2026-05-02 11:12:38.607Z | 112.649° SE | 28.794° | 2026-05-02 11:21:38.607Z | 54.587° ENE |
| 20 mins | 2026-05-02 12:58:38.607Z | 221.775° SW | 2026-05-02 13:07:38.607Z | 290.594° WNW | 44.526° | 2026-05-02 13:18:38.607Z | 36.072° NE |
| 17 mins | 2026-05-02 14:56:38.607Z | 273.437° WNW | 2026-05-02 15:05:38.607Z | 333.842° NNW | 28.905° | 2026-05-02 15:13:38.607Z | 28.614° NE |
| 12 mins | 2026-05-02 16:58:38.607Z | 319.438° NNW | 2026-05-02 17:04:38.607Z | 357.681° N | 19.952° | 2026-05-02 17:10:38.607Z | 39.184° NE |
| 13 mins | 2026-05-02 18:56:38.607Z | 332.876° NNW | 2026-05-02 19:03:38.607Z | 23.74° NE | 26.125° | 2026-05-02 19:09:38.607Z | 78.165° E |
| 14 mins | 2026-05-02 20:52:38.607Z | 324.045° NNW | 2026-05-02 21:00:38.607Z | 35.613° NE | 44.693° | 2026-05-02 21:06:38.607Z | 139.303° SSE |
| 8 mins | 2026-05-02 22:50:38.607Z | 289.659° WNW | 2026-05-02 22:54:38.607Z | 255.19° W | 18.936° | 2026-05-02 22:58:38.607Z | 216.182° SW |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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