COSMOS 2550, 48865
Orbit data source: Space-Track
COSMOS 2550, 48865 is a payload satellite owned by VVKO VKS (CIS) in LEO that was launched on Fri, 25 Jun 2021 UTC via a SOYUZ-2-1B 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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48865 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
TSSKBP/ARSLO
Mission
Operational Defense Sigint
Bus & Motor
PION-NKS, Unknown motor
Mass
7,231 kg wet, ~6,700 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 4.3 m
Radar Cross Section
24.037 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2550
1 48865U 21056A 26235.57912311 .00004026 00000-0 12810-3 0 9999
2 48865 67.1409 256.0457 0008369 269.2395 90.7800 15.33838595289059Epoch: 2026-08-23T13:53Z
TLE epoch observation values (Epoch: 2026-08-23T13:53:56.236Z)
Latitude
-0.00009°
Longitude
75.68819°
Altitude
466.699 km
Speed
7.633 km/s
True Right ascension
17h 04m 10s
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
18:56:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
468.341 km
Perigee altitude
456.891 km
Semi-major axis
6,840.753 km
Eccentricity
0.00084
Inclination
67.1409°
RAAN
256.0457°
Arg. of periapsis
269.2395°
True anomaly
90.87589°
Mean anomaly
90.78°
Eccentric anomaly
90.82795°
Mean motion
3.83608 °/min
Orbital period
93.85 mins
BSTAR
0.0001281
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Other satellites on launch #56 in the year 2021 (2021-06-25 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 2550 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-24 04:10:26.084Z | 273.762° WNW | 2026-08-24 04:12:26.084Z | 313.341° NW | 16.977° | 2026-08-24 04:14:26.084Z | 349.605° N |
| 5 mins | 2026-08-24 12:22:26.084Z | 325.884° NNW | 2026-08-24 12:24:26.084Z | 180.715° SSW | 42.907° | 2026-08-24 12:27:26.084Z | 156.596° SSE |
| 4 mins | 2026-08-25 02:02:26.084Z | 144.099° SSE | 2026-08-25 02:04:26.084Z | 100.241° ESE | 18.791° | 2026-08-25 02:06:26.084Z | 64.201° ENE |
| 4 mins | 2026-08-25 03:38:26.084Z | 263.359° W | 2026-08-25 03:40:26.084Z | 312.897° NW | 23.145° | 2026-08-25 03:42:26.084Z | 355.268° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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