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: 1 week ago
TLE from 1 week ago
0 YAOGAN-39 04B
1 58143U 23163C 25302.35654155 .00011642 00000-0 55374-3 0 9993
2 58143 34.9966 7.7026 0007657 267.9214 92.0623 15.18380807112230Epoch: 2025-10-29T08:33Z
TLE epoch observation values (Epoch: 2025-10-29T08:33:25.189Z)
Latitude
0.00001°
Longitude
-158.58319°
Altitude
509.837 km
Speed
7.611 km/s
True Right ascension
00h 30m 48s
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
16:18:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
519.255 km
Perigee altitude
508.701 km
Semi-major axis
6,892.115 km
Eccentricity
0.00077
Inclination
34.9966°
RAAN
7.7026°
Arg. of periapsis
267.9214°
True anomaly
92.14998°
Mean anomaly
92.0623°
Eccentric anomaly
92.10614°
Mean motion
3.79328 °/min
Orbital period
94.9 mins
BSTAR
0.00055374
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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 | 2025-11-07 04:13:37.271Z | 203.232° SW | 2025-11-07 04:16:37.271Z | 152.835° SSE | 17.603° | 2025-11-07 04:18:37.271Z | 118.886° SE |
| 5 mins | 2025-11-07 05:53:37.271Z | 230.774° WSW | 2025-11-07 05:55:37.271Z | 186.904° SSW | 30.221° | 2025-11-07 05:58:37.271Z | 112.581° SE |
| 5 mins | 2025-11-07 07:33:37.271Z | 242.631° WSW | 2025-11-07 07:35:37.271Z | 194.232° SSW | 29.99° | 2025-11-07 07:38:37.271Z | 127.051° 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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