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: 14 hours ago
TLE from 14 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 26130.67428618 .00006007 00000-0 25102-3 0 9994
2 58141 34.9995 220.6588 0004673 22.9182 337.1741 15.22952448141852Epoch: 2026-05-10T16:10Z
TLE epoch observation values (Epoch: 2026-05-10T16:10:58.325Z)
Latitude
-0.00001°
Longitude
109.44179°
Altitude
492.888 km
Speed
7.622 km/s
True Right ascension
14h 42m 38s
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
14:40:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.405 km
Perigee altitude
496.977 km
Semi-major axis
6,878.328 km
Eccentricity
0.00047
Inclination
34.9995°
RAAN
220.6588°
Arg. of periapsis
22.9182°
True anomaly
337.15332°
Mean anomaly
337.1741°
Eccentric anomaly
337.16371°
Mean motion
3.80469 °/min
Orbital period
94.62 mins
BSTAR
0.00025102
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-05-11 09:43:59.524Z | 195.341° SSW | 2026-05-11 09:45:59.524Z | 157.527° S | 18.112° | 2026-05-11 09:47:59.524Z | 120.939° SE |
| 5 mins | 2026-05-11 11:22:59.524Z | 231.262° WSW | 2026-05-11 11:24:59.524Z | 184.502° SSW | 30.384° | 2026-05-11 11:27:59.524Z | 111.935° ESE |
| 5 mins | 2026-05-11 13:02:59.524Z | 237.056° WSW | 2026-05-11 13:04:59.524Z | 180.415° SSW | 28.827° | 2026-05-11 13:07:59.524Z | 125.28° SE |
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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