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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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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 (11 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: 8 hours ago

TLE from 8 hours ago

0 COSMOS 2503
1 40420U 15009A   26126.15449927  .00001720  00000-0  12059-3 0  9993
2 40420  97.8340 182.1680 0017011  39.0429 321.2022 15.06479708612600

Epoch: 2026-05-06T03:42Z

TLE epoch observation values (Epoch: 2026-05-06T03:42:28.736Z)

Latitude

-0.00004°

Longitude

-97.47079°

Altitude

540.852 km

Speed

7.597 km/s

True Right ascension

12h 08m 40s

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

19:35:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

555.745 km

Perigee altitude

532.195 km

Semi-major axis

6,922.107 km

Eccentricity

0.0017

Inclination

97.834°

RAAN

182.168°

Arg. of periapsis

39.0429°

True anomaly

321.07986°

Mean anomaly

321.2022°

Eccentric anomaly

321.14105°

Mean motion

3.76865 °/min

Orbital period

95.52 mins

BSTAR

0.00012059

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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.
5 mins	2026-05-06 17:02:22.831Z	344.563° N	2026-05-06 17:04:22.831Z	283.612° WNW	34.364°	2026-05-06 17:07:22.831Z	218.873° SW
6 mins	2026-05-07 03:45:22.831Z	167.887° S	2026-05-07 03:47:22.831Z	173.437° S	43.018°	2026-05-07 03:51:22.831Z	346.927° N

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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: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-05-06T03:42:28.736Z)

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: 8 hours ago