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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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Identifier
48865, 2021-056A
Orbit
LEO
Last TLE update
11 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 11 hours ago
0 COSMOS 2550
1 48865U 21056A   25163.16674147  .00005694  00000-0  17872-3 0  9990
2 48865  67.1414 139.2863 0008406 268.7747  91.2444 15.33839081221984
Epoch: 2025-06-12T04:00Z
TLE epoch observation values (Epoch: 2025-06-12T04:00:06.462Z)
Latitude
-0.00009°
Longitude
178.52055°
Altitude
466.744 km
Speed
7.633 km/s
True Right ascension
09h 17m 08s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
30.28671°
Longitude
-168.70468°
Altitude
470.719 km
Speed
7.632 km/s
Apparent Right ascension
11h 39m 05s
Apparent Declination
-3° 42' 48"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
01:30:18
Azimuth
42.015° NE
Elevation
-45.936°
Doppler factor
1
Orbital elements
Apogee altitude
468.364 km
Perigee altitude
456.864 km
Semi-major axis
6,840.751 km
Eccentricity
0.00084
Inclination
67.1414°
RAAN
139.2863°
Arg. of periapsis
268.7747°
True anomaly
Unknown
Mean anomaly
91.2444°
Eccentric anomaly
Unknown
Mean motion
3.83608 °/min
Orbital period
93.85 mins
BSTAR
0.00017872
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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.
5 mins2025-06-13 00:31:00.265Z244.87° WSW2025-06-13 00:33:00.265Z302.104° NW31.569°2025-06-13 00:36:00.265Z10.342° NNE
5 mins2025-06-13 08:43:00.265Z358.024° N2025-06-13 08:45:00.265Z56.702° ENE32.52°2025-06-13 08:48:00.265Z126.022° SE
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