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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

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<iframe src="https://www.satcat.com/sats-embedded/55131?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/55131?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55131, 2023-002A

Orbit

GEO

Last TLE update

9 hours ago

Origin

Strategic Support Troops (CN / PRC)

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 (2 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, 30 m

Radar Cross Section

34.063 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 9 hours ago

0 SJ-23
1 55131U 23002A   25128.90805672 -.00000340  00000-0  00000-0 0  9995
2 55131   2.6781  83.4779 0000821 122.0194 118.8790  1.00104311  8451

Epoch: 2025-05-08T21:47Z

Definitive object data (Epoch: 2025-05-08T21:47:36.1Z)

Latitude

-2.32413°

Longitude

130.48526°

Altitude

35,835.112 km

Speed

3.073 km/s

True Right ascension

21h 37m 25s

True Declination

-2° 19' 18"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

0.85969°

Longitude

-91.62148°

Altitude

35,833.854 km

Speed

3.073 km/s

Apparent Right ascension

06h 28m 31s

Apparent Declination

-4° 21' 09"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:07:33

Azimuth

294.603° NW

Elevation

-32.535°

Doppler factor

Orbital elements

Apogee altitude

35,838.141 km

Perigee altitude

35,831.21 km

Semi-major axis

42,212.812 km

Eccentricity

0.0000821

Inclination

2.6781°

RAAN

83.4779°

Arg. of periapsis

122.0194°

True anomaly

118.88724°

Mean anomaly

118.879°

Eccentric anomaly

118.88312°

Mean motion

0.25025 °/min

BSTAR

Unknown

Orbital period

1438.55 mins

Loading historical data...

55131 neighbors

Authenticating...

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Other satellites on launch #2 in the year 2023 (2023-01-08 UTC)

CZ-7A R/B, 55132

SJ-23 AKM, 55180

SJ-23 Visibility forecast

Observer location: undefined°, undefined°

SJ-23 is not visible in the next 10 days

Authenticating...

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Check out SJ-23, 55131 on other resources

View SJ-23, 55131 on NASA - NSSDCA Website

View SJ-23, 55131 on Heavens-Above

View SJ-23, 55131 on Keep Track

View SJ-23, 55131 on Celestrak

View SJ-23, 55131 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.