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: 16 hours ago
TLE from 16 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 26040.53984499 .00001778 00000-0 75343-4 0 9996
2 58141 35.0000 67.4838 0006578 287.0496 72.9498 15.22974214128105Epoch: 2026-02-09T12:57Z
TLE epoch observation values (Epoch: 2026-02-09T12:57:22.607Z)
Latitude
0°
Longitude
93.50641°
Altitude
494.459 km
Speed
7.621 km/s
True Right ascension
04h 29m 56s
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
06:57:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
504.65 km
Perigee altitude
495.601 km
Semi-major axis
6,878.262 km
Eccentricity
0.00066
Inclination
35°
RAAN
67.4838°
Arg. of periapsis
287.0496°
True anomaly
73.02188°
Mean anomaly
72.9498°
Eccentric anomaly
72.98584°
Mean motion
3.80474 °/min
Orbital period
94.62 mins
BSTAR
0.000075343
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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 | 2026-02-10 06:33:31.028Z | 218.986° SW | 2026-02-10 06:35:31.028Z | 170.749° S | 27.702° | 2026-02-10 06:38:31.028Z | 109.016° ESE |
| 6 mins | 2026-02-10 08:12:31.028Z | 245.273° WSW | 2026-02-10 08:15:31.028Z | 165.793° S | 30.774° | 2026-02-10 08:18:31.028Z | 116.046° SE |
| 4 mins | 2026-02-10 09:52:31.028Z | 237.733° WSW | 2026-02-10 09:54:31.028Z | 197.37° SSW | 20.481° | 2026-02-10 09:56:31.028Z | 158.214° S |
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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