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: 10 hours ago
TLE from 10 hours ago
0 YAOGAN-39 04B
1 58143U 23163C 26025.59464495 .00009850 00000-0 47424-3 0 9993
2 58143 34.9928 177.6246 0011627 31.6586 328.4824 15.17955616125642Epoch: 2026-01-25T14:16Z
TLE epoch observation values (Epoch: 2026-01-25T14:16:17.323Z)
Latitude
-0.00005°
Longitude
-161.35016°
Altitude
504.104 km
Speed
7.618 km/s
True Right ascension
11h 50m 29s
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
02:01:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
523.279 km
Perigee altitude
507.249 km
Semi-major axis
6,893.401 km
Eccentricity
0.00116
Inclination
34.9928°
RAAN
177.6246°
Arg. of periapsis
31.6586°
True anomaly
328.41266°
Mean anomaly
328.4824°
Eccentric anomaly
328.44754°
Mean motion
3.79221 °/min
Orbital period
94.93 mins
BSTAR
0.00047424
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-01-26 14:12:41.403Z | 214.083° SW | 2026-01-26 14:15:41.403Z | 150.626° SSE | 23.045° | 2026-01-26 14:17:41.403Z | 114.026° SE |
| 5 mins | 2026-01-26 15:52:41.403Z | 238.37° WSW | 2026-01-26 15:54:41.403Z | 190.41° SSW | 32.071° | 2026-01-26 15:57:41.403Z | 115.526° SE |
| 5 mins | 2026-01-26 17:32:41.403Z | 240.836° WSW | 2026-01-26 17:34:41.403Z | 196.069° SSW | 25.29° | 2026-01-26 17:37:41.403Z | 137.962° SSE |
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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