COSMOS 2503, 40420
Orbit data source: Space-Track
COSMOS 2503, 40420 is a payload satellite owned by VVKO VKS (CIS) in SSO that was launched on Fri, 27 Feb 2015 UTC via a SOYUZ-2-1A 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
Embed this page
Focus sentinelFocus sentinel
40420 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Arsenal
Mission
Operational Defense Imaging
Bus & Motor
BARS, AOCS
Mass
3,700 kg wet, ~3,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 5.0 m
Radar Cross Section
20.881 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 COSMOS 2503
1 40420U 15009A 25311.10950444 .00001802 00000-0 12905-3 0 9995
2 40420 97.8641 358.8445 0015016 285.2872 74.6694 15.05671517585508Epoch: 2025-11-07T02:37Z
TLE epoch observation values (Epoch: 2025-11-07T02:37:41.183Z)
Latitude
-0.00003°
Longitude
-87.13528°
Altitude
549.766 km
Speed
7.589 km/s
True Right ascension
23h 55m 22s
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
07:23:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
556.848 km
Perigee altitude
536.052 km
Semi-major axis
6,924.587 km
Eccentricity
0.0015
Inclination
97.8641°
RAAN
358.8445°
Arg. of periapsis
285.2872°
True anomaly
74.83543°
Mean anomaly
74.6694°
Eccentric anomaly
74.75241°
Mean motion
3.76662 °/min
Orbital period
95.58 mins
BSTAR
0.00012905
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 #9 in the year 2015 (2015-02-27 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 2503 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 | 2025-11-07 15:56:45.451Z | 21.271° NNE | 2025-11-07 16:00:45.451Z | 112.771° SE | 39.772° | 2025-11-07 16:03:45.451Z | 177.485° S |
| 5 mins | 2025-11-08 02:42:45.451Z | 111.601° ESE | 2025-11-08 02:44:45.451Z | 60.38° ENE | 26.062° | 2025-11-08 02:47:45.451Z | 10.342° NNE |
| 4 mins | 2025-11-08 04:17:45.451Z | 239.497° WSW | 2025-11-08 04:18:45.451Z | 258.22° W | 17.639° | 2025-11-08 04:21:45.451Z | 309.505° NW |
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 |
|---|
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 ascending order |
|---|