COSMOS 2499 DEB, 49939
Orbit data source: Space-Track
COSMOS 2499 DEB, 49939 is space debris in LEO originally from a launch on Fri, 23 May 2014 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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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49939 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
TsNIIKhM
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: 2 days ago
TLE from 2 days ago
0 COSMOS 2499 DEB
1 49939U 14028W 25348.38676003 .00001989 00000-0 65599-2 0 9997
2 49939 82.5024 19.8758 0272900 54.7239 307.9069 12.88480777193037Epoch: 2025-12-14T09:16Z
TLE epoch observation values (Epoch: 2025-12-14T09:16:56.066Z)
Latitude
-0.00009°
Longitude
157.34177°
Altitude
1,185.094 km
Speed
7.32 km/s
True Right ascension
01h 19m 30s
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
03:22:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,514.511 km
Perigee altitude
1,095.174 km
Semi-major axis
7,682.98 km
Eccentricity
0.02729
Inclination
82.5024°
RAAN
19.8758°
Arg. of periapsis
54.7239°
True anomaly
305.38755°
Mean anomaly
307.9069°
Eccentric anomaly
306.65247°
Mean motion
3.22291 °/min
Orbital period
111.7 mins
BSTAR
0.0065599
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Other satellites on launch #28 in the year 2014 (2014-05-23 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 2499 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 | 2025-12-16 12:12:07.184Z | 33.242° NE | 2025-12-16 12:16:07.184Z | 68.024° E | 16.365° | 2025-12-16 12:20:07.184Z | 100.45° ESE |
| 14 mins | 2025-12-16 14:03:07.184Z | 351.546° N | 2025-12-16 14:09:07.184Z | 326.322° NNW | 44.841° | 2025-12-16 14:17:07.184Z | 176.139° S |
| 5 mins | 2025-12-16 15:59:07.184Z | 296.937° NW | 2025-12-16 16:01:07.184Z | 280.039° WNW | 14.168° | 2025-12-16 16:04:07.184Z | 256.22° W |
| 11 mins | 2025-12-17 02:37:07.184Z | 176.987° S | 2025-12-17 02:42:07.184Z | 108.701° ESE | 43.991° | 2025-12-17 02:48:07.184Z | 11.874° NNE |
| 6 mins | 2025-12-17 04:33:07.184Z | 268.395° W | 2025-12-17 04:36:07.184Z | 298.535° NW | 15.838° | 2025-12-17 04:39:07.184Z | 326.947° NNW |
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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