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: 16 hours ago
TLE from 16 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 25315.34165264 .00024120 00000-0 99718-3 0 9997
2 58141 35.0005 274.7375 0007648 217.3109 142.7075 15.23052840114346Epoch: 2025-11-11T08:11Z
TLE epoch observation values (Epoch: 2025-11-11T08:11:58.788Z)
Latitude
-0°
Longitude
101.01296°
Altitude
499.729 km
Speed
7.615 km/s
True Right ascension
18h 18m 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
20:25:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
505.149 km
Perigee altitude
494.628 km
Semi-major axis
6,878.026 km
Eccentricity
0.00076
Inclination
35.0005°
RAAN
274.7375°
Arg. of periapsis
217.3109°
True anomaly
142.76056°
Mean anomaly
142.7075°
Eccentric anomaly
142.73403°
Mean motion
3.80494 °/min
Orbital period
94.61 mins
BSTAR
0.00099718
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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 | 2025-11-12 01:46:05.498Z | 214.215° SW | 2025-11-12 01:48:05.498Z | 177.335° S | 23.054° | 2025-11-12 01:51:05.498Z | 113.844° SE |
| 5 mins | 2025-11-12 03:26:05.498Z | 234.181° WSW | 2025-11-12 03:28:05.498Z | 175.873° S | 32.218° | 2025-11-12 03:31:05.498Z | 112.926° SE |
| 4 mins | 2025-11-12 05:06:05.498Z | 229.439° WSW | 2025-11-12 05:07:05.498Z | 205.091° SW | 24.598° | 2025-11-12 05:10:05.498Z | 140.906° 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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