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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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: 12 hours ago
TLE from 12 hours ago
0 YAOGAN-39 04B
1 58143U 23163C 26251.25143764 .00004324 00000-0 21750-3 0 9995
2 58143 34.9926 211.2712 0010554 233.4593 126.5149 15.16623766159934Epoch: 2026-09-08T06:02Z
TLE epoch observation values (Epoch: 2026-09-08T06:02:04.212Z)
Latitude
0.00005°
Longitude
133.43318°
Altitude
519.296 km
Speed
7.604 km/s
True Right ascension
14h 05m 05s
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
09:50:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
526.575 km
Perigee altitude
512.016 km
Semi-major axis
6,897.433 km
Eccentricity
0.00106
Inclination
34.9926°
RAAN
211.2712°
Arg. of periapsis
233.4593°
True anomaly
126.61202°
Mean anomaly
126.5149°
Eccentric anomaly
126.56347°
Mean motion
3.78889 °/min
Orbital period
95.01 mins
BSTAR
0.0002175
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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 | 2026-09-09 01:13:57.549Z | 205.054° SW | 2026-09-09 01:16:57.549Z | 149.811° SSE | 21.211° | 2026-09-09 01:18:57.549Z | 115.888° SE |
| 6 mins | 2026-09-09 02:53:57.549Z | 233.907° WSW | 2026-09-09 02:55:57.549Z | 189.345° SSW | 38.216° | 2026-09-09 02:59:57.549Z | 106.05° ESE |
| 5 mins | 2026-09-09 04:33:57.549Z | 244.832° WSW | 2026-09-09 04:35:57.549Z | 200.669° SSW | 34.172° | 2026-09-09 04:38:57.549Z | 131.235° 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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