YAOGAN-39 04A, 58141
Orbit data source: Space-Track
YAOGAN-39 04A, 58141 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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58141 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
DFH
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 04A
1 58141U 23163A 26251.22208700 .00008197 00000-0 34086-3 0 9990
2 58141 35.0003 182.5361 0004163 20.5514 339.5368 15.23049338160247Epoch: 2026-09-08T05:19Z
TLE epoch observation values (Epoch: 2026-09-08T05:19:48.316Z)
Latitude
-0.00001°
Longitude
115.29317°
Altitude
492.876 km
Speed
7.622 km/s
True Right ascension
12h 10m 08s
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
09:49:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.763 km
Perigee altitude
497.036 km
Semi-major axis
6,878.036 km
Eccentricity
0.00042
Inclination
35.0003°
RAAN
182.5361°
Arg. of periapsis
20.5514°
True anomaly
339.52011°
Mean anomaly
339.5368°
Eccentric anomaly
339.52846°
Mean motion
3.80493 °/min
Orbital period
94.61 mins
BSTAR
0.00034086
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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 04A 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 00:31:06.695Z | 216.528° SW | 2026-09-09 00:33:06.695Z | 158.755° S | 33.029° | 2026-09-09 00:36:06.695Z | 105.917° ESE |
| 5 mins | 2026-09-09 02:10:06.695Z | 242.383° WSW | 2026-09-09 02:12:06.695Z | 191.906° SSW | 37.496° | 2026-09-09 02:15:06.695Z | 121.828° SE |
| 4 mins | 2026-09-09 03:50:06.695Z | 231.148° WSW | 2026-09-09 03:52:06.695Z | 189.515° SSW | 19.902° | 2026-09-09 03:54:06.695Z | 155.79° 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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