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: 6 hours ago
TLE from 6 hours ago
0 YAOGAN-39 04B
1 58143U 23163C 26305.88167233 .00004125 00000-0 20568-3 0 9996
2 58143 34.9932 230.9346 0009874 352.8379 7.2192 15.16951775168233Epoch: 2026-11-01T21:09Z
TLE epoch observation values (Epoch: 2026-11-01T21:09:36.489Z)
Latitude
0.00002°
Longitude
-127.63409°
Altitude
507.218 km
Speed
7.616 km/s
True Right ascension
15h 23m 44s
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
22:41:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
525.112 km
Perigee altitude
511.493 km
Semi-major axis
6,896.439 km
Eccentricity
0.00099
Inclination
34.9932°
RAAN
230.9346°
Arg. of periapsis
352.8379°
True anomaly
7.23344°
Mean anomaly
7.2192°
Eccentric anomaly
7.22632°
Mean motion
3.78971 °/min
Orbital period
94.99 mins
BSTAR
0.00020568
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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 | 2026-11-02 03:56:54.743Z | 246.988° WSW | 2026-11-02 03:59:54.743Z | 196.877° SSW | 19.194° | 2026-11-02 04:01:54.743Z | 162.539° S |
| 4 mins | 2026-11-02 22:40:54.743Z | 186.764° SSW | 2026-11-02 22:41:54.743Z | 167.997° S | 18.98° | 2026-11-02 22:44:54.743Z | 115.218° SE |
| 5 mins | 2026-11-03 00:19:54.743Z | 229.75° WSW | 2026-11-03 00:21:54.743Z | 181.277° SSW | 37.314° | 2026-11-03 00:24:54.743Z | 110.865° ESE |
| 5 mins | 2026-11-03 01:59:54.743Z | 242.46° WSW | 2026-11-03 02:01:54.743Z | 192.817° SSW | 35.909° | 2026-11-03 02:04:54.743Z | 126.802° 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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