COSMOS 2553, 51511
Orbit data source: Space-Track
COSMOS 2553, 51511 is a payload satellite owned by VVKO VKS (CIS) in LEO that was launched on Sat, 05 Feb 2022 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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51511 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Resehetnev ISS
Mission
Non-operational Defense Radar Imaging
Bus & Motor
MERIDIAN?, Unknown motor
Mass
~2,000 kg wet, ~2,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 5.0 m
Radar Cross Section
14.304 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 days ago
TLE from 5 days ago
0 COSMOS 2553
1 51511U 22011A 26296.85260778 -.00000030 00000-0 15239-3 0 9994
2 51511 67.0915 175.3316 0004090 270.6325 89.4149 11.32845040195016Epoch: 2026-10-23T20:27Z
TLE epoch observation values (Epoch: 2026-10-23T20:27:45.312Z)
Latitude
-0.00002°
Longitude
-163.87441°
Altitude
1,998.082 km
Speed
6.9 km/s
True Right ascension
11h 41m 19s
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
05:52:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,998.281 km
Perigee altitude
1,991.431 km
Semi-major axis
8,372.993 km
Eccentricity
0.00041
Inclination
67.0915°
RAAN
175.3316°
Arg. of periapsis
270.6325°
True anomaly
89.46177°
Mean anomaly
89.4149°
Eccentric anomaly
89.43833°
Mean motion
2.83284 °/min
Orbital period
127.08 mins
BSTAR
0.00015239
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Other satellites on launch #11 in the year 2022 (2022-02-05 UTC)
No other RSOs were in this launch
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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 2553 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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2026-10-28 14:57:51.272Z | 144.394° SSE | 2026-10-28 15:05:51.272Z | 97.069° ESE | 24.253° | 2026-10-28 15:13:51.272Z | 50.985° ENE |
| 21 mins | 2026-10-28 17:05:51.272Z | 209.93° SW | 2026-10-28 17:15:51.272Z | 323.398° NNW | 83.383° | 2026-10-28 17:26:51.272Z | 28.187° NE |
| 17 mins | 2026-10-28 19:20:51.272Z | 273.942° WNW | 2026-10-28 19:28:51.272Z | 324.335° NNW | 27.879° | 2026-10-28 19:37:51.272Z | 19.15° NNE |
| 11 mins | 2026-10-28 21:40:51.272Z | 331.565° NNW | 2026-10-28 21:45:51.272Z | 359.483° N | 15.666° | 2026-10-28 21:51:51.272Z | 32.831° NE |
| 17 mins | 2026-10-28 23:54:51.272Z | 343.88° N | 2026-10-29 00:02:51.272Z | 34.295° NE | 29.275° | 2026-10-29 00:11:51.272Z | 91.177° ESE |
| 21 mins | 2026-10-29 02:05:51.272Z | 331.342° NNW | 2026-10-29 02:15:51.272Z | 349.905° N | 85.209° | 2026-10-29 02:26:51.272Z | 153.497° SSE |
| 14 mins | 2026-10-29 04:19:51.272Z | 300.244° NW | 2026-10-29 04:25:51.272Z | 263.905° W | 22.131° | 2026-10-29 04:33:51.272Z | 218.077° SW |
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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