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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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: 8 hours ago
TLE from 8 hours ago
0 YAOGAN-39 01A
1 57727U 23130A 26266.26936184 .00006878 00000-0 28855-3 0 9998
2 57727 35.0017 231.9389 0003762 287.6763 72.3541 15.22789142170672Epoch: 2026-09-23T06:27Z
TLE epoch observation values (Epoch: 2026-09-23T06:27:52.862Z)
Latitude
-0.00002°
Longitude
132.8457°
Altitude
495.557 km
Speed
7.62 km/s
True Right ascension
15h 27m 45s
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
07:14:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.27 km
Perigee altitude
498.094 km
Semi-major axis
6,878.819 km
Eccentricity
0.00038
Inclination
35.0017°
RAAN
231.9389°
Arg. of periapsis
287.6763°
True anomaly
72.39519°
Mean anomaly
72.3541°
Eccentric anomaly
72.37464°
Mean motion
3.80428 °/min
Orbital period
94.63 mins
BSTAR
0.00028855
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-09-24 01:35:18.771Z | 200.005° SSW | 2026-09-24 01:37:18.771Z | 163.594° S | 20.131° | 2026-09-24 01:40:18.771Z | 111.812° ESE |
| 6 mins | 2026-09-24 03:14:18.771Z | 235.364° WSW | 2026-09-24 03:17:18.771Z | 157.001° SSE | 36.332° | 2026-09-24 03:20:18.771Z | 106.732° ESE |
| 5 mins | 2026-09-24 04:54:18.771Z | 242.035° WSW | 2026-09-24 04:56:18.771Z | 191.98° SSW | 34.125° | 2026-09-24 04:59:18.771Z | 128.081° 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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