COSMOS 2499, 39765
Orbit data source: Space-Track
COSMOS 2499, 39765 is a payload satellite owned by TsNIIKhM (CIS) in LEO that was launched on Fri, 23 May 2014 UTC via an ROKOT launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
39765 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
TsNIIKhM
Mission
Non-operational Defense Technology
Bus & Motor
NIVELIR, Unknown motor
Mass
~100 kg wet, ~100 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Hex Cyl + 1 Ant, 0.5 m
Radar Cross Section
0.352 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 COSMOS 2499
1 39765U 14028E 26155.25517691 .00000025 00000-0 48704-4 0 9994
2 39765 82.4496 261.1535 0231916 32.2735 329.2318 12.82902501563363Epoch: 2026-06-04T06:07Z
TLE epoch observation values (Epoch: 2026-06-04T06:07:27.285Z)
Latitude
-0.00006°
Longitude
-83.41226°
Altitude
1,180.071 km
Speed
7.335 km/s
True Right ascension
17h 24m 36s
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
07:40:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,505.814 km
Perigee altitude
1,148.419 km
Semi-major axis
7,705.254 km
Eccentricity
0.02319
Inclination
82.4496°
RAAN
261.1535°
Arg. of periapsis
32.2735°
True anomaly
327.83773°
Mean anomaly
329.2318°
Eccentric anomaly
328.53827°
Mean motion
3.20895 °/min
Orbital period
112.19 mins
BSTAR
0.000048704
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 #28 in the year 2014 (2014-05-23 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 2499 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-06-05 06:33:56.856Z | 137.215° SSE | 2026-06-05 06:38:56.856Z | 89.614° E | 24.219° | 2026-06-05 06:44:56.856Z | 31.031° NE |
| 11 mins | 2026-06-05 08:26:56.856Z | 215.398° SW | 2026-06-05 08:31:56.856Z | 280.648° WNW | 36.741° | 2026-06-05 08:37:56.856Z | 354.14° N |
| 14 mins | 2026-06-05 18:16:56.856Z | 4.761° NNE | 2026-06-05 18:22:56.856Z | 71.782° E | 39.567° | 2026-06-05 18:30:56.856Z | 154.255° SSE |
| 11 mins | 2026-06-05 20:10:56.856Z | 322.716° NNW | 2026-06-05 20:15:56.856Z | 274.772° WNW | 26.325° | 2026-06-05 20:21:56.856Z | 223.315° 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 |
|---|
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 |
|---|