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COSMOS 2550, 48865

Orbit data source: Space-Track

COSMOS 2550, 48865 is a payload satellite 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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Identifier
48865, 2021-056A
Orbit
LEO
Last TLE update
4 hours ago
Origin
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)
2021-06-25 (4 years ago)
Launch vehicle
SOYUZ-2-1B
Launch site
Plesetsk Missile And Space Complex (PKMTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl + 2 Pan, 8.5 m
Radar Cross Section
24.037 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 4 hours ago
0 COSMOS 2550
1 48865U 21056A   25151.88583366  .00006750  00000-0  21085-3 0  9993
2 48865  67.1411 173.4114 0008346 269.5789  90.4409 15.33826126220255
Epoch: 2025-05-31T21:15Z
TLE epoch observation values (Epoch: 2025-05-31T21:15:36.028Z)
Latitude
-0.00002°
Longitude
-35.10852°
Altitude
466.702 km
Speed
7.633 km/s
True Right ascension
11h 33m 38s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-67.23518°
Longitude
-123.16293°
Altitude
483.264 km
Speed
7.626 km/s
Apparent Right ascension
01h 12m 57s
Apparent Declination
-63° 02' 49"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
11:12:47
Azimuth
207.718° SW
Elevation
-60.798°
Doppler factor
1
Orbital elements
Apogee altitude
468.362 km
Perigee altitude
456.943 km
Semi-major axis
6,840.79 km
Eccentricity
0.00083
Inclination
67.1411°
RAAN
173.4114°
Arg. of periapsis
269.5789°
True anomaly
Unknown
Mean anomaly
90.4409°
Eccentric anomaly
Unknown
Mean motion
3.83605 °/min
Orbital period
93.85 mins
BSTAR
0.00021085
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Other satellites on launch #56 in the year 2021 (2021-06-25 UTC)

COSMOS 2550 Visibility forecast

Observer location: undefined°, undefined°

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 mins2025-06-01 03:42:04.217Z255.851° W2025-06-01 03:43:04.217Z286.961° WNW30.864°2025-06-01 03:46:04.217Z7.531° NNE
5 mins2025-06-01 11:53:04.217Z353.964° N2025-06-01 11:55:04.217Z40.446° NE31.794°2025-06-01 11:58:04.217Z123.319° SE
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