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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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Iframe URL

https://www.satcat.com/sats-embedded/40420?theme=dark&initialShowStats=false

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Identifier

40420, 2015-009A

Orbit

SSO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

Arsenal

Mission

Operational Defense Imaging

Bus & Motor

BARS, AOCS

Mass

3,700 kg wet, ~3,500 kg dry

Launch date (UTC)

2015-02-27 (12 years ago)

Launch vehicle

SOYUZ-2-1A

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 2 Pan, 5.0 m

Radar Cross Section

20.881 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 COSMOS 2503
1 40420U 15009A   26287.73549092  .00001139  00000-0  80606-4 0  9997
2 40420  97.8160 346.3639 0015430 202.0079 158.0487 15.06871844636934

Epoch: 2026-10-14T17:39Z

TLE epoch observation values (Epoch: 2026-10-14T17:39:06.415Z)

Latitude

-0.00003°

Longitude

58.30623°

Altitude

558.74 km

Speed

7.577 km/s

True Right ascension

23h 05m 27s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

06:48:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

553.446 km

Perigee altitude

532.088 km

Semi-major axis

6,920.904 km

Eccentricity

0.00154

Inclination

97.816°

RAAN

346.3639°

Arg. of periapsis

202.0079°

True anomaly

158.11468°

Mean anomaly

158.0487°

Eccentric anomaly

158.0817°

Mean motion

3.76963 °/min

Orbital period

95.5 mins

BSTAR

0.000080606

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Other satellites on launch #9 in the year 2015 (2015-02-27 UTC)

SL-4 R/B, 40421 (Decayed)

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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	2026-10-15 16:31:52.367Z	28.295° NE	2026-10-15 16:34:52.367Z	84.479° E	42.587°	2026-10-15 16:38:52.367Z	172.124° S
4 mins	2026-10-16 03:16:52.367Z	105.179° ESE	2026-10-16 03:18:52.367Z	62.173° ENE	23.586°	2026-10-16 03:20:52.367Z	24.941° NE
5 mins	2026-10-16 04:50:52.367Z	220.062° SW	2026-10-16 04:52:52.367Z	258.634° W	24.015°	2026-10-16 04:55:52.367Z	314.851° NW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out COSMOS 2503, 40420 on other resources

View COSMOS 2503, 40420 on NASA - NSSDCA Website

View COSMOS 2503, 40420 on Heavens-Above

View COSMOS 2503, 40420 on Keep Track

View COSMOS 2503, 40420 on Celestrak

View COSMOS 2503, 40420 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

COSMOS 2503, 40420

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-10-14T17:39:06.415Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #9 in the year 2015 (2015-02-27 UTC)

COSMOS 2503 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 2503, 40420 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago