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: 17 hours ago
TLE from 17 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 26085.57500694 -.00000171 00000-0 -55490-5 0 9990
2 58141 34.9991 144.2823 0005216 331.1690 28.8736 15.22961478134970Epoch: 2026-03-26T13:48Z
TLE epoch observation values (Epoch: 2026-03-26T13:48:00.599Z)
Latitude
-0.00002°
Longitude
113.25779°
Altitude
492.681 km
Speed
7.623 km/s
True Right ascension
09h 37m 07s
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
11:49:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.752 km
Perigee altitude
496.576 km
Semi-major axis
6,878.301 km
Eccentricity
0.00052
Inclination
34.9991°
RAAN
144.2823°
Arg. of periapsis
331.169°
True anomaly
28.90248°
Mean anomaly
28.8736°
Eccentric anomaly
28.88804°
Mean motion
3.80471 °/min
Orbital period
94.62 mins
BSTAR
-0.000005549
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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 | 2026-03-27 07:19:48.317Z | 196.324° SSW | 2026-03-27 07:21:48.317Z | 164.686° S | 15.585° | 2026-03-27 07:23:48.317Z | 128.349° SE |
| 5 mins | 2026-03-27 08:59:48.317Z | 218.994° SW | 2026-03-27 09:01:48.317Z | 160.547° S | 29.158° | 2026-03-27 09:04:48.317Z | 106.759° ESE |
| 5 mins | 2026-03-27 10:38:48.317Z | 242.739° WSW | 2026-03-27 10:40:48.317Z | 194.073° SSW | 30.378° | 2026-03-27 10:43:48.317Z | 124.538° SE |
| 4 mins | 2026-03-27 12:18:48.317Z | 230.833° WSW | 2026-03-27 12:20:48.317Z | 191.629° SSW | 17.359° | 2026-03-27 12:22:48.317Z | 159.049° 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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