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: 9 hours ago
TLE from 9 hours ago
0 YAOGAN-39 01A
1 57727U 23130A 25318.59196773 .00018700 00000-0 78026-3 0 9995
2 57727 35.0036 38.3006 0002313 12.9756 347.1018 15.22806955122974Epoch: 2025-11-14T14:12Z
TLE epoch observation values (Epoch: 2025-11-14T14:12:26.011Z)
Latitude
-0.00002°
Longitude
131.25893°
Altitude
494.736 km
Speed
7.621 km/s
True Right ascension
02h 33m 12s
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
19:58:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.219 km
Perigee altitude
499.037 km
Semi-major axis
6,878.765 km
Eccentricity
0.00023
Inclination
35.0036°
RAAN
38.3006°
Arg. of periapsis
12.9756°
True anomaly
347.09588°
Mean anomaly
347.1018°
Eccentric anomaly
347.09884°
Mean motion
3.80432 °/min
Orbital period
94.63 mins
BSTAR
0.00078026
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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 | 2025-11-15 09:19:54.157Z | 205.174° SW | 2025-11-15 09:21:54.157Z | 170.55° S | 19.307° | 2025-11-15 09:24:54.157Z | 114.445° SE |
| 5 mins | 2025-11-15 10:59:54.157Z | 227.668° WSW | 2025-11-15 11:01:54.157Z | 168.129° S | 31.212° | 2025-11-15 11:04:54.157Z | 109.26° ESE |
| 5 mins | 2025-11-15 12:38:54.157Z | 244.749° WSW | 2025-11-15 12:40:54.157Z | 201.173° SSW | 27.763° | 2025-11-15 12:43:54.157Z | 132.455° 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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