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: 20 hours ago
TLE from 20 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 25345.30058152 .00037605 00000-0 15611-2 0 9994
2 58141 35.0001 86.3535 0006298 118.6457 241.4891 15.22842689118913Epoch: 2025-12-11T07:12Z
TLE epoch observation values (Epoch: 2025-12-11T07:12:50.243Z)
Latitude
-0.00004°
Longitude
-102.11443°
Altitude
498.247 km
Speed
7.617 km/s
True Right ascension
05h 45m 24s
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
01:55:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
504.853 km
Perigee altitude
496.189 km
Semi-major axis
6,878.658 km
Eccentricity
0.00063
Inclination
35.0001°
RAAN
86.3535°
Arg. of periapsis
118.6457°
True anomaly
241.42571°
Mean anomaly
241.4891°
Eccentric anomaly
241.4574°
Mean motion
3.80441 °/min
Orbital period
94.63 mins
BSTAR
0.0015611
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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 | 2025-12-12 10:11:34.042Z | 189.856° SSW | 2025-12-12 10:13:34.042Z | 155.08° SSE | 15.647° | 2025-12-12 10:15:34.042Z | 121.477° SE |
| 5 mins | 2025-12-12 11:50:34.042Z | 226.101° WSW | 2025-12-12 11:52:34.042Z | 178.908° S | 29.172° | 2025-12-12 11:55:34.042Z | 110.556° ESE |
| 5 mins | 2025-12-12 13:30:34.042Z | 235.642° WSW | 2025-12-12 13:32:34.042Z | 174.759° S | 29.997° | 2025-12-12 13:35:34.042Z | 120.693° 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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