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: 7 hours ago
TLE from 7 hours ago
0 COSMOS 2553
1 51511U 22011A 26129.46719100 -.00000059 00000-0 -65835-3 0 9993
2 51511 67.0932 65.5294 0003994 274.1296 85.9190 11.32846788176058Epoch: 2026-05-09T11:12Z
TLE epoch observation values (Epoch: 2026-05-09T11:12:45.302Z)
Latitude
-0.00004°
Longitude
30.05642°
Altitude
1,997.87 km
Speed
6.9 km/s
True Right ascension
04h 22m 07s
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
02:31:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,998.191 km
Perigee altitude
1,991.503 km
Semi-major axis
8,372.984 km
Eccentricity
0.0004
Inclination
67.0932°
RAAN
65.5294°
Arg. of periapsis
274.1296°
True anomaly
85.96465°
Mean anomaly
85.919°
Eccentric anomaly
85.94183°
Mean motion
2.83284 °/min
Orbital period
127.08 mins
BSTAR
-0.00065835
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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. |
|---|---|---|---|---|---|---|---|
| 18 mins | 2026-05-09 19:45:51.905Z | 157.422° SSE | 2026-05-09 19:54:51.905Z | 99.585° ESE | 28.612° | 2026-05-09 20:03:51.905Z | 45.003° ENE |
| 21 mins | 2026-05-09 21:54:51.905Z | 221.279° SW | 2026-05-09 22:04:51.905Z | 296.248° NW | 42.845° | 2026-05-09 22:15:51.905Z | 25.392° NE |
| 15 mins | 2026-05-10 00:11:51.905Z | 286.543° WNW | 2026-05-10 00:18:51.905Z | 328.89° NNW | 21.632° | 2026-05-10 00:26:51.905Z | 17.207° NNE |
| 11 mins | 2026-05-10 02:31:51.905Z | 340.257° N | 2026-05-10 02:36:51.905Z | 8.884° NNE | 15.579° | 2026-05-10 02:42:51.905Z | 42.222° NE |
| 18 mins | 2026-05-10 04:44:51.905Z | 344.881° N | 2026-05-10 04:52:51.905Z | 39.511° NE | 30.183° | 2026-05-10 05:02:51.905Z | 104.592° ESE |
| 20 mins | 2026-05-10 06:55:51.905Z | 327.265° NNW | 2026-05-10 07:05:51.905Z | 233.653° WSW | 43.82° | 2026-05-10 07:15:51.905Z | 165.157° S |
| 9 mins | 2026-05-10 09:10:51.905Z | 288.44° WNW | 2026-05-10 09:14:51.905Z | 265.774° W | 14.511° | 2026-05-10 09:19:51.905Z | 238.324° WSW |
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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