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SJ-23, 55131

Orbit data source: Space-Track

SJ-23, 55131 is a payload satellite owned by PLA SSF (CN) in GEO that was launched on Sun, 08 Jan 2023 UTC via a CHANG ZHENG 7A launch vehicle from the Wenchang Satellite Launch Center (WSC). 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.

Not visible in the next 10 days
Identifier
55131, 2023-002A
Orbit
GEO
Last TLE update
5 hours ago
Origin
Manufacturer
CAST?
Mission
Operational Civil Communications
Bus & Motor
DFH-4E?, DFH-4 LAE
Mass
~5,000 kg wet, ~2,500 kg dry
Launch date (UTC)
2023-01-08 (3 years ago)
Launch vehicle
CHANG ZHENG 7A
Launch site
Wenchang Satellite Launch Center (WSC)
Object type
Payload
Rocket body
Debris
Shape & HBR
Box + 2 Pan, 15.0 m
Radar Cross Section
34.063 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 5 hours ago
0 SJ-23
1 55131U 23002A   25199.76980881 -.00000113  00000-0  00000+0 0  9990
2 55131   2.8568  82.6296 0001693 116.3307  97.8002  1.00065787  9345
Epoch: 2025-07-18T18:28Z
TLE epoch observation values (Epoch: 2025-07-18T18:28:31.481Z)
Latitude
-1.62212°
Longitude
82.80556°
Altitude
35,845.137 km
Speed
3.073 km/s
True Right ascension
19h 47m 00s
True Declination
-1° 37' 14"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-2.65506°
Longitude
161.06346°
Altitude
35,851.438 km
Speed
3.072 km/s
Apparent Right ascension
00h 56m 48s
Apparent Declination
-7° 17' 55"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
12:28:49
Azimuth
347.264° N
Elevation
-56.786°
Doppler factor
1
Orbital elements
Apogee altitude
35,852.656 km
Perigee altitude
35,838.359 km
Semi-major axis
42,223.645 km
Eccentricity
0.00017
Inclination
2.8568°
RAAN
82.6296°
Arg. of periapsis
116.3307°
True anomaly
97.81942°
Mean anomaly
97.8002°
Eccentric anomaly
97.80981°
Mean motion
0.25016 °/min
Orbital period
1,439.11 mins
BSTAR
0
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