YAOGAN-39 01A, 57727
Orbit data source: Space-Track
YAOGAN-39 01A, 57727 is a payload satellite owned by PLA GAD (CN) in LEO that was launched on Thu, 31 Aug 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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57727 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: 1 day ago
TLE from 1 day ago
0 YAOGAN-39 01A
1 57727U 23130A 25295.77117883 .00000126 00000-0 68208-5 0 9990
2 57727 35.0007 181.6849 0002037 192.2302 167.8363 15.22613986119494Epoch: 2025-10-22T18:30Z
TLE epoch observation values (Epoch: 2025-10-22T18:30:29.850Z)
Latitude
-0.00005°
Longitude
-127.37956°
Altitude
498.236 km
Speed
7.617 km/s
True Right ascension
12h 06m 44s
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
00:53:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.61 km
Perigee altitude
499.808 km
Semi-major axis
6,879.346 km
Eccentricity
0.0002
Inclination
35.0007°
RAAN
181.6849°
Arg. of periapsis
192.2302°
True anomaly
167.84122°
Mean anomaly
167.8363°
Eccentric anomaly
167.83876°
Mean motion
3.80384 °/min
Orbital period
94.64 mins
BSTAR
0.0000068208
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Other satellites on launch #130 in the year 2023 (2023-08-31 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 01A 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 | 2025-10-24 19:31:28.873Z | 198.191° SSW | 2025-10-24 19:33:28.873Z | 164.397° S | 17.228° | 2025-10-24 19:35:28.873Z | 126.512° SE |
| 5 mins | 2025-10-24 21:11:28.873Z | 220.898° SW | 2025-10-24 21:13:28.873Z | 159.772° S | 29.887° | 2025-10-24 21:16:28.873Z | 106.974° ESE |
| 5 mins | 2025-10-24 22:50:28.873Z | 242.779° WSW | 2025-10-24 22:52:28.873Z | 194.345° SSW | 29.617° | 2025-10-24 22:55:28.873Z | 126.8° SE |
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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