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: 5 hours ago
TLE from 5 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 14.91451422351668Epoch: 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
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
20:43:51
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)
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-01-01 01:23:09.999Z | 123.332° SE | 2026-01-01 01:26:09.999Z | 74.271° E | 22.959° | 2026-01-01 01:29:09.999Z | 19.323° NNE |
| 5 mins | 2026-01-01 03:00:09.999Z | 229.094° WSW | 2026-01-01 03:02:09.999Z | 271.404° WNW | 22.201° | 2026-01-01 03:05:09.999Z | 319.187° NNW |
| 6 mins | 2026-01-01 14:43:09.999Z | 33.636° NE | 2026-01-01 14:45:09.999Z | 88.935° E | 37.984° | 2026-01-01 14:49:09.999Z | 175.897° S |
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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