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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Edit Public Description
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: 2 days ago
TLE from 2 days ago
0 YAOGAN-39 04A
1 58141U 23163A 26034.37863591 .00015447 00000-0 63603-3 0 9993
2 58141 35.0006 106.2388 0006621 236.8932 123.1148 15.23264436127164Epoch: 2026-02-03T09:05Z
TLE epoch observation values (Epoch: 2026-02-03T09:05:14.142Z)
Latitude
0.00001°
Longitude
-163.63054°
Altitude
497.397 km
Speed
7.617 km/s
True Right ascension
07h 04m 57s
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
04:37:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.806 km
Perigee altitude
494.699 km
Semi-major axis
6,877.389 km
Eccentricity
0.00066
Inclination
35.0006°
RAAN
106.2388°
Arg. of periapsis
236.8932°
True anomaly
123.17832°
Mean anomaly
123.1148°
Eccentric anomaly
123.14656°
Mean motion
3.80547 °/min
Orbital period
94.6 mins
BSTAR
0.00063603
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-02-05 08:32:18.338Z | 221.23° SW | 2026-02-05 08:35:18.338Z | 162.918° S | 24.724° | 2026-02-05 08:38:18.338Z | 107.989° ESE |
| 5 mins | 2026-02-05 10:12:18.338Z | 240.608° WSW | 2026-02-05 10:14:18.338Z | 194.968° SSW | 31.698° | 2026-02-05 10:17:18.338Z | 117.42° SE |
| 5 mins | 2026-02-05 11:52:18.338Z | 236.223° WSW | 2026-02-05 11:54:18.338Z | 189.096° SSW | 23.72° | 2026-02-05 11:57:18.338Z | 137.969° 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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