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: 2 days ago
TLE from 2 days ago
0 YAOGAN-39 04A
1 58141U 23163A 25254.24856791 .00004328 00000-0 18003-3 0 9996
2 58141 34.9997 298.9565 0004569 6.8439 353.2337 15.23191724105029Epoch: 2025-09-11T05:57Z
TLE epoch observation values (Epoch: 2025-09-11T05:57:56.267Z)
Latitude
-0.00004°
Longitude
-141.04136°
Altitude
492.009 km
Speed
7.623 km/s
True Right ascension
19h 55m 49s
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
10:01:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.614 km
Perigee altitude
496.329 km
Semi-major axis
6,877.608 km
Eccentricity
0.00046
Inclination
34.9997°
RAAN
298.9565°
Arg. of periapsis
6.8439°
True anomaly
353.22753°
Mean anomaly
353.2337°
Eccentric anomaly
353.23061°
Mean motion
3.80528 °/min
Orbital period
94.61 mins
BSTAR
0.00018003
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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 | 2025-09-14 06:36:30.732Z | 217.03° SW | 2025-09-14 06:38:30.732Z | 173.206° S | 25.831° | 2025-09-14 06:41:30.732Z | 110.294° ESE |
| 5 mins | 2025-09-14 08:16:30.732Z | 232.667° WSW | 2025-09-14 08:18:30.732Z | 167.5° S | 31.34° | 2025-09-14 08:21:30.732Z | 114.241° SE |
| 5 mins | 2025-09-14 09:55:30.732Z | 239.928° WSW | 2025-09-14 09:57:30.732Z | 198.275° SSW | 22.124° | 2025-09-14 10:00:30.732Z | 143.821° 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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