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: 11 hours ago
TLE from 11 hours ago
0 COSMOS 2503
1 40420U 15009A 25260.19888661 .00001680 00000-0 12141-3 0 9994
2 40420 97.8746 306.9303 0018149 95.8783 264.4512 15.05384083577842Epoch: 2025-09-17T04:46Z
TLE epoch observation values (Epoch: 2025-09-17T04:46:23.803Z)
Latitude
-0.00002°
Longitude
-121.04715°
Altitude
554.622 km
Speed
7.584 km/s
True Right ascension
20h 27m 43s
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
08:33:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
559.902 km
Perigee altitude
534.764 km
Semi-major axis
6,925.47 km
Eccentricity
0.00181
Inclination
97.8746°
RAAN
306.9303°
Arg. of periapsis
95.8783°
True anomaly
264.24425°
Mean anomaly
264.4512°
Eccentric anomaly
264.34772°
Mean motion
3.7659 °/min
Orbital period
95.59 mins
BSTAR
0.00012141
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-09-17 16:29:43.634Z | 357.508° N | 2025-09-17 16:32:43.634Z | 304.28° NW | 34.076° | 2025-09-17 16:36:43.634Z | 214.983° SW |
| 6 mins | 2025-09-18 03:14:43.634Z | 167.607° S | 2025-09-18 03:16:43.634Z | 173.013° S | 43.583° | 2025-09-18 03:20:43.634Z | 347.018° N |
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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