COSMOS 249 DEB, 3757
Orbit data source: Space-Track
COSMOS 249 DEB, 3757 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
3757 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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: 14 hours ago
TLE from 14 hours ago
0 COSMOS 249 DEB
1 3757U 68091AU 26171.45084668 .00008494 00000-0 90398-3 0 9991
2 3757 61.9707 202.5120 0363283 101.5794 262.6282 14.51476133834398Epoch: 2026-06-20T10:49Z
TLE epoch observation values (Epoch: 2026-06-20T10:49:13.153Z)
Latitude
-0.00008°
Longitude
131.54187°
Altitude
764.801 km
Speed
7.45 km/s
True Right ascension
13h 30m 02s
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
11:43:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
977.642 km
Perigee altitude
461.931 km
Semi-major axis
7,097.924 km
Eccentricity
0.03633
Inclination
61.9707°
RAAN
202.512°
Arg. of periapsis
101.5794°
True anomaly
258.52712°
Mean anomaly
262.6282°
Eccentric anomaly
260.57484°
Mean motion
3.62949 °/min
Orbital period
99.19 mins
BSTAR
0.00090398
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #91 in the year 1968 (1968-10-20 UTC)
Did you know?
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
Loading observer location...
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 | 2026-06-21 03:29:01.000Z | 186.851° SSW | 2026-06-21 03:33:01.000Z | 113.511° SE | 31.366° | 2026-06-21 03:36:01.000Z | 55.972° ENE |
| 5 mins | 2026-06-21 05:13:01.000Z | 274.735° WNW | 2026-06-21 05:15:01.000Z | 311.043° NW | 20.366° | 2026-06-21 05:18:01.000Z | 5.41° NNE |
| 5 mins | 2026-06-21 12:10:01.000Z | 347.64° N | 2026-06-21 12:12:01.000Z | 75.678° E | 37.394° | 2026-06-21 12:15:01.000Z | 128.026° SE |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|