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: 6 hours ago
TLE from 6 hours ago
0 YAOGAN-39 01A
1 57727U 23130A 26085.93748899 .00011190 00000-0 46534-3 0 9992
2 57727 35.0029 285.9849 0002155 112.5466 247.5477 15.22999435143162Epoch: 2026-03-26T22:29Z
TLE epoch observation values (Epoch: 2026-03-26T22:29:59.048Z)
Latitude
-0.00002°
Longitude
124.10957°
Altitude
496.273 km
Speed
7.619 km/s
True Right ascension
19h 03m 56s
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
09:24:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
501.531 km
Perigee altitude
498.567 km
Semi-major axis
6,878.186 km
Eccentricity
0.00022
Inclination
35.0029°
RAAN
285.9849°
Arg. of periapsis
112.5466°
True anomaly
247.52488°
Mean anomaly
247.5477°
Eccentric anomaly
247.53629°
Mean motion
3.8048 °/min
Orbital period
94.62 mins
BSTAR
0.00046534
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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 | 2026-03-27 17:38:45.782Z | 215.007° SW | 2026-03-27 17:40:45.782Z | 176.863° S | 23.538° | 2026-03-27 17:43:45.782Z | 113.039° SE |
| 5 mins | 2026-03-27 19:18:45.782Z | 234.198° WSW | 2026-03-27 19:20:45.782Z | 174.393° S | 32.052° | 2026-03-27 19:23:45.782Z | 113.159° SE |
| 4 mins | 2026-03-27 20:58:45.782Z | 228.228° WSW | 2026-03-27 20:59:45.782Z | 203.828° SW | 24.021° | 2026-03-27 21:02:45.782Z | 141.592° 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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