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: 3 days ago
TLE from 3 days ago
0 YAOGAN-39 04A
1 58141U 23163A 25258.18132420 .00000380 00000-0 17291-4 0 9992
2 58141 35.0001 274.2227 0004559 41.0610 319.0448 15.23091444105627Epoch: 2025-09-15T04:21Z
TLE epoch observation values (Epoch: 2025-09-15T04:21:06.41Z)
Latitude
0.00001°
Longitude
-145.44366°
Altitude
493.064 km
Speed
7.622 km/s
True Right ascension
18h 16m 53s
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
23:06:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.908 km
Perigee altitude
496.637 km
Semi-major axis
6,877.91 km
Eccentricity
0.00046
Inclination
35.0001°
RAAN
274.2227°
Arg. of periapsis
41.061°
True anomaly
319.01054°
Mean anomaly
319.0448°
Eccentric anomaly
319.02767°
Mean motion
3.80503 °/min
Orbital period
94.61 mins
BSTAR
0.000017291
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-09-18 06:39:07.766Z | 252.756° W | 2025-09-18 06:42:07.766Z | 203.584° SW | 30.158° | 2025-09-18 06:46:07.766Z | 116.935° SE |
| 4 mins | 2025-09-18 08:20:07.766Z | 236.009° WSW | 2025-09-18 08:22:07.766Z | 196.002° SSW | 19.233° | 2025-09-18 08:24:07.766Z | 158.876° S |
| 5 mins | 2025-09-19 04:37:07.766Z | 222.548° SW | 2025-09-19 04:39:07.766Z | 172.989° S | 28.654° | 2025-09-19 04:42:07.766Z | 109.24° ESE |
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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