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: 6 hours ago
TLE from 6 hours ago
0 YAOGAN-39 04A
1 58141U 23163A 26305.95794113 .00007975 00000-0 33249-3 0 9991
2 58141 35.0004 198.3192 0004550 186.1608 173.9052 15.22967313168595Epoch: 2026-11-01T22:59Z
TLE epoch observation values (Epoch: 2026-11-01T22:59:26.113Z)
Latitude
0.00002°
Longitude
172.21858°
Altitude
498.913 km
Speed
7.616 km/s
True Right ascension
13h 13m 16s
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
00:58:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.276 km
Perigee altitude
497.016 km
Semi-major axis
6,878.283 km
Eccentricity
0.00046
Inclination
35.0004°
RAAN
198.3192°
Arg. of periapsis
186.1608°
True anomaly
173.91073°
Mean anomaly
173.9052°
Eccentric anomaly
173.90797°
Mean motion
3.80472 °/min
Orbital period
94.62 mins
BSTAR
0.00033249
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-11-02 21:16:35.275Z | 220.167° SW | 2026-11-02 21:19:35.275Z | 161.843° S | 27.094° | 2026-11-02 21:22:35.275Z | 107.59° ESE |
| 5 mins | 2026-11-02 22:56:35.275Z | 240.5° WSW | 2026-11-02 22:58:35.275Z | 194.643° SSW | 38.752° | 2026-11-02 23:01:35.275Z | 116.383° SE |
| 5 mins | 2026-11-03 00:36:35.275Z | 237.227° WSW | 2026-11-03 00:38:35.275Z | 189.175° SSW | 27.175° | 2026-11-03 00:41:35.275Z | 136.703° 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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