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: 14 hours ago
TLE from 14 hours ago
0 YAOGAN-39 01A
1 57727U 23130A 26172.92419578 .00002384 00000-0 10086-3 0 9995
2 57727 35.0035 98.9525 0002762 207.5314 152.5255 15.22872968156437Epoch: 2026-06-21T22:10Z
TLE epoch observation values (Epoch: 2026-06-21T22:10:50.515Z)
Latitude
0.00001°
Longitude
-143.87546°
Altitude
497.772 km
Speed
7.617 km/s
True Right ascension
06h 35m 48s
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
23:19:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.329 km
Perigee altitude
498.529 km
Semi-major axis
6,878.566 km
Eccentricity
0.00028
Inclination
35.0035°
RAAN
98.9525°
Arg. of periapsis
207.5314°
True anomaly
152.5401°
Mean anomaly
152.5255°
Eccentric anomaly
152.5328°
Mean motion
3.80449 °/min
Orbital period
94.63 mins
BSTAR
0.00010086
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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 | 2026-06-22 23:39:12.044Z | 206.41° SW | 2026-06-22 23:40:12.044Z | 181.827° SSW | 25.882° | 2026-06-22 23:43:12.044Z | 112.902° SE |
| 5 mins | 2026-06-23 01:18:12.044Z | 237.536° WSW | 2026-06-23 01:20:12.044Z | 180.165° SSW | 31.949° | 2026-06-23 01:23:12.044Z | 116.708° SE |
| 4 mins | 2026-06-23 02:58:12.044Z | 228.638° WSW | 2026-06-23 02:59:12.044Z | 206.618° SW | 21.478° | 2026-06-23 03:02:12.044Z | 148.026° 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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