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.
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40420 intel report (Beta)
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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: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2503
1 40420U 15009A 25311.10950445 .00001802 00000-0 12905-3 0 9996
2 40420 97.8641 358.8445 0015016 285.2872 74.6694 15.05671517585508Epoch: 2025-11-07T02:37Z
TLE epoch observation values (Epoch: 2025-11-07T02:37:41.184Z)
Latitude
-0.00002°
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
12:35:09
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
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Other satellites on launch #9 in the year 2015 (2015-02-27 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 2503 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-11-08 02:42:07.428Z | 120.846° SE | 2025-11-08 02:44:07.428Z | 79.255° E | 26.144° | 2025-11-08 02:47:07.428Z | 15.758° NNE |
| 5 mins | 2025-11-08 15:54:07.428Z | 36.596° NE | 2025-11-08 15:56:07.428Z | 101.15° ESE | 37.241° | 2025-11-08 15:59:07.428Z | 172.084° S |
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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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 |
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