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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44421 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Lavochkin
Mission
Non-operational Defense Technology
Bus & Motor
KARAT-200, Unknown motor
Mass
547 kg wet, ~400 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 1.5 m
Radar Cross Section
3.727 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 COSMOS 2535
1 44421U 19039A 25256.87955785 .00000820 00000-0 88312-4 0 9997
2 44421 97.6122 290.2550 0009896 59.2556 300.9636 14.90988977335450Epoch: 2025-09-13T21:06Z
TLE epoch observation values (Epoch: 2025-09-13T21:06:33.798Z)
Latitude
-0.00002°
Longitude
-19.4924°
Altitude
594.349 km
Speed
7.565 km/s
True Right ascension
19h 21m 01s
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
23:29:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
598.761 km
Perigee altitude
584.966 km
Semi-major axis
6,970.001 km
Eccentricity
0.00099
Inclination
97.6122°
RAAN
290.255°
Arg. of periapsis
59.2556°
True anomaly
300.8663°
Mean anomaly
300.9636°
Eccentric anomaly
300.91496°
Mean motion
3.72987 °/min
Orbital period
96.52 mins
BSTAR
0.000088312
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Other satellites on launch #39 in the year 2019 (2019-07-10 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 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-09-14 15:22:45.565Z | 5.746° NNE | 2025-09-14 15:26:45.565Z | 293.589° NW | 42.012° | 2025-09-14 15:30:45.565Z | 204.044° SW |
| 6 mins | 2025-09-15 02:14:45.565Z | 157.525° S | 2025-09-15 02:16:45.565Z | 105.255° ESE | 43.868° | 2025-09-15 02:20:45.565Z | 351.54° N |
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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