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
04:44:34
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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-10-28 14:58:06.353Z | 143.399° SSE | 2026-10-28 15:06:06.353Z | 95.218° ESE | 24.215° | 2026-10-28 15:13:06.353Z | 53.882° ENE |
| 21 mins | 2026-10-28 17:06:06.353Z | 210.045° SW | 2026-10-28 17:16:06.353Z | 341.809° N | 81.77° | 2026-10-28 17:27:06.353Z | 28.309° NE |
| 17 mins | 2026-10-28 19:21:06.353Z | 274.981° WNW | 2026-10-28 19:29:06.353Z | 326.356° NNW | 27.868° | 2026-10-28 19:38:06.353Z | 20.075° NNE |
| 11 mins | 2026-10-28 21:41:06.353Z | 332.824° NNW | 2026-10-28 21:46:06.353Z | 0.98° NNE | 15.676° | 2026-10-28 21:52:06.353Z | 34.031° NE |
| 17 mins | 2026-10-28 23:55:06.353Z | 344.893° N | 2026-10-29 00:03:06.353Z | 36.389° NE | 29.306° | 2026-10-29 00:12:06.353Z | 92.106° ESE |
| 21 mins | 2026-10-29 02:06:06.353Z | 331.416° NNW | 2026-10-29 02:16:06.353Z | 12.552° NNE | 87.779° | 2026-10-29 02:27:06.353Z | 153.539° SSE |
| 13 mins | 2026-10-29 04:20:06.353Z | 299.061° NW | 2026-10-29 04:26:06.353Z | 262.145° W | 22.131° | 2026-10-29 04:33:06.353Z | 221.129° 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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