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 26310.93988188 .00007750 00000-0 32248-3 0 9991
2 58141 35.0002 166.9887 0005292 228.1923 131.8340 15.23032944169358Epoch: 2026-11-06T22:33Z
TLE epoch observation values (Epoch: 2026-11-06T22:33:25.794Z)
Latitude
-0.00001°
Longitude
142.47892°
Altitude
498.033 km
Speed
7.617 km/s
True Right ascension
11h 07m 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
03:04:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.589 km
Perigee altitude
496.309 km
Semi-major axis
6,878.086 km
Eccentricity
0.00053
Inclination
35.0002°
RAAN
166.9887°
Arg. of periapsis
228.1923°
True anomaly
131.87916°
Mean anomaly
131.834°
Eccentric anomaly
131.85658°
Mean motion
3.80489 °/min
Orbital period
94.62 mins
BSTAR
0.00032248
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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 | 2026-11-07 19:17:55.790Z | 221.036° SW | 2026-11-07 19:19:55.790Z | 177.218° S | 31.287° | 2026-11-07 19:22:55.790Z | 110.559° ESE |
| 5 mins | 2026-11-07 20:57:55.790Z | 235.764° WSW | 2026-11-07 20:59:55.790Z | 173.121° S | 38.552° | 2026-11-07 21:02:55.790Z | 116.229° SE |
| 4 mins | 2026-11-07 22:37:55.790Z | 224.78° SW | 2026-11-07 22:38:55.790Z | 202.167° SSW | 22.826° | 2026-11-07 22:41:55.790Z | 147.538° 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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