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COSMOS 2535, 44421

Orbit data source: Space-Track

COSMOS 2535, 44421 is a payload satellite owned by TS VS RF (CIS) in SSO that was launched on Wed, 10 Jul 2019 UTC via a SOYUZ-2-1V 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/44421?theme=dark&initialShowStats=false

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Identifier

44421, 2019-039A

Orbit

SSO

Country

CIS

Related business

Topographics Service of the Russian Armed Froces (RU)

Manufacturer

Lavochkin

Mission

Non-operational Defense Technology

Bus & Motor

KARAT-200, Unknown motor

Mass

547 kg wet, ~400 kg dry

Launch date (UTC)

2019-07-10 (6 years ago)

Launch vehicle

SOYUZ-2-1V

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 2 Pan, 1.5 m

Radar Cross Section

3.727 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 3 hours ago

TLE from 3 hours ago

0 COSMOS 2535
1 44421U 19039A   25365.64946304  .00002839  00000-0  28908-3 0  9996
2 44421  97.5975  35.0885 0009821  57.0178 303.1984 14.91451422351668

Epoch: 2025-12-31T15:35Z

TLE epoch observation values (Epoch: 2025-12-31T15:35:13.606Z)

Latitude

-0.00001°

Longitude

60.96646°

Altitude

592.71 km

Speed

7.566 km/s

True Right ascension

02h 20m 21s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

18:43:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

597.265 km

Perigee altitude

583.577 km

Semi-major axis

6,968.558 km

Eccentricity

0.00098

Inclination

97.5975°

RAAN

35.0885°

Arg. of periapsis

57.0178°

True anomaly

303.10417°

Mean anomaly

303.1984°

Eccentric anomaly

303.15129°

Mean motion

3.73103 °/min

Orbital period

96.49 mins

BSTAR

0.00028908

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Other satellites on launch #39 in the year 2019 (2019-07-10 UTC)

COSMOS 2535 DEB, 45007 (Decayed)

COSMOS 2535 DEB, 45011

VOLGA DEB, 44621

COSMOS 2535 DEB, 45005 (Decayed)

COSMOS 2535 DEB, 45010 (Decayed)

COSMOS 2535 DEB, 45006 (Decayed)

COSMOS 2535 DEB, 45013 (Decayed)

COSMOS 2535 DEB, 45015 (Decayed)

COSMOS 2535 DEB, 45002 (Decayed)

COSMOS 2535 DEB, 45008 (Decayed)

COSMOS 2535 DEB, 44633

COSMOS 2535 DEB, 44712

COSMOS 2535 DEB, 44631

COSMOS 2537, 44423 (Decayed)

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COSMOS 2535 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.
6 mins	2026-01-01 01:23:41.282Z	118.334° SE	2026-01-01 01:26:41.282Z	61.576° ENE	22.825°	2026-01-01 01:29:41.282Z	14.604° NNE
5 mins	2026-01-01 02:59:41.282Z	222.088° SW	2026-01-01 03:01:41.282Z	260.082° W	22.277°	2026-01-01 03:04:41.282Z	314.595° NW
6 mins	2026-01-01 14:42:41.282Z	29.517° NE	2026-01-01 14:45:41.282Z	118.239° SE	37.575°	2026-01-01 14:48:41.282Z	173.801° S

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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 2535, 44421 on other resources

View COSMOS 2535, 44421 on NASA - NSSDCA Website

View COSMOS 2535, 44421 on Heavens-Above

View COSMOS 2535, 44421 on Keep Track

View COSMOS 2535, 44421 on Celestrak

View COSMOS 2535, 44421 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 2535, 44421

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 hours ago

TLE from 3 hours ago

TLE epoch observation values (Epoch: 2025-12-31T15:35:13.606Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 2019 (2019-07-10 UTC)

COSMOS 2535 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 2535, 44421 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 hours ago