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: 8 hours ago
TLE from 8 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 26305.82683469 .00008212 00000-0 34231-3 0 9995
2 58141 35.0003 199.1435 0004534 185.0905 174.9764 15.22965400168577Epoch: 2026-11-01T19:50Z
TLE epoch observation values (Epoch: 2026-11-01T19:50:38.517Z)
Latitude
-0.00001°
Longitude
-139.62963°
Altitude
498.913 km
Speed
7.616 km/s
True Right ascension
13h 16m 34s
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
23:52:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.27 km
Perigee altitude
497.033 km
Semi-major axis
6,878.289 km
Eccentricity
0.00045
Inclination
35.0003°
RAAN
199.1435°
Arg. of periapsis
185.0905°
True anomaly
174.98095°
Mean anomaly
174.9764°
Eccentric anomaly
174.97867°
Mean motion
3.80472 °/min
Orbital period
94.62 mins
BSTAR
0.00034231
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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 | 2026-11-02 21:16:45.303Z | 218.549° SW | 2026-11-02 21:19:45.303Z | 157.092° SSE | 26.871° | 2026-11-02 21:22:45.303Z | 106.23° ESE |
| 5 mins | 2026-11-02 22:56:45.303Z | 238.662° WSW | 2026-11-02 22:58:45.303Z | 187.639° SSW | 39.504° | 2026-11-02 23:01:45.303Z | 115.019° SE |
| 4 mins | 2026-11-03 00:36:45.303Z | 234.451° WSW | 2026-11-03 00:38:45.303Z | 184.427° SSW | 26.827° | 2026-11-03 00:40:45.303Z | 144.873° 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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