YAOGAN-39 04B, 58143
Orbit data source: Space-Track
YAOGAN-39 04B, 58143 is a payload satellite owned by PLA GAD (CN) in LEO that was launched on Mon, 23 Oct 2023 UTC via a CHANG ZHENG 2D launch vehicle from the Xichang Space Center, China (XSC). 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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58143 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SAST
Mission
Operational Defense Sigint
Bus & Motor
Unknown
Mass
~300 kg wet, ~300 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
11.063 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 19 hours ago
TLE from 19 hours ago
0 YAOGAN-39 04B
1 58143U 23163C 25259.47307397 .00007599 00000-0 37104-3 0 9997
2 58143 34.9951 275.3048 0008435 246.4489 113.5338 15.17541032105717Epoch: 2025-09-16T11:21Z
TLE epoch observation values (Epoch: 2025-09-16T11:21:13.591Z)
Latitude
0°
Longitude
109.3353°
Altitude
514.509 km
Speed
7.607 km/s
True Right ascension
18h 21m 13s
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
22:47:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
522.334 km
Perigee altitude
510.702 km
Semi-major axis
6,894.655 km
Eccentricity
0.00084
Inclination
34.9951°
RAAN
275.3048°
Arg. of periapsis
246.4489°
True anomaly
113.62238°
Mean anomaly
113.5338°
Eccentric anomaly
113.57809°
Mean motion
3.79118 °/min
Orbital period
94.96 mins
BSTAR
0.00037104
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Other satellites on launch #163 in the year 2023 (2023-10-23 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.YAOGAN-39 04B 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-09-17 06:36:17.930Z | 242.857° WSW | 2025-09-17 06:40:17.930Z | 160.016° S | 31.16° | 2025-09-17 06:43:17.930Z | 107.746° ESE |
| 6 mins | 2025-09-17 08:17:17.930Z | 246.56° WSW | 2025-09-17 08:19:17.930Z | 206.651° SW | 28.431° | 2025-09-17 08:23:17.930Z | 125.029° SE |
| 4 mins | 2025-09-18 04:40:17.930Z | 190.67° SSW | 2025-09-18 04:41:17.930Z | 169.738° S | 20.895° | 2025-09-18 04:44:17.930Z | 113.565° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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