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: 7 hours ago
TLE from 7 hours ago
0 YAOGAN-39 04B
1 58143U 23163C 25340.59685212 .00010010 00000-0 49222-3 0 9992
2 58143 34.9931 129.4606 0011410 306.0864 53.8792 15.17221231118047Epoch: 2025-12-06T14:19Z
TLE epoch observation values (Epoch: 2025-12-06T14:19:28.023Z)
Latitude
0.00001°
Longitude
-161.02847°
Altitude
508.524 km
Speed
7.615 km/s
True Right ascension
08h 37m 50s
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
18:58:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
525.354 km
Perigee altitude
509.618 km
Semi-major axis
6,895.623 km
Eccentricity
0.00114
Inclination
34.9931°
RAAN
129.4606°
Arg. of periapsis
306.0864°
True anomaly
53.9849°
Mean anomaly
53.8792°
Eccentric anomaly
53.93204°
Mean motion
3.79038 °/min
Orbital period
94.98 mins
BSTAR
0.00049222
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-07 14:15:44.456Z | 221.606° SW | 2025-12-07 14:18:44.456Z | 172.764° S | 23.732° | 2025-12-07 14:21:44.456Z | 112.284° ESE |
| 5 mins | 2025-12-07 15:56:44.456Z | 236.967° WSW | 2025-12-07 15:58:44.456Z | 185.895° SSW | 32.663° | 2025-12-07 16:01:44.456Z | 114.683° SE |
| 5 mins | 2025-12-07 17:36:44.456Z | 240.204° WSW | 2025-12-07 17:38:44.456Z | 194.865° SSW | 25.791° | 2025-12-07 17:41:44.456Z | 137.565° 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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