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 26260.23784549 .00007335 00000-0 30598-3 0 9991
2 57727 35.0032 269.8570 0003814 245.9408 114.0907 15.22965065169759Epoch: 2026-09-17T05:42Z
TLE epoch observation values (Epoch: 2026-09-17T05:42:29.850Z)
Latitude
-0.00006°
Longitude
-171.94542°
Altitude
496.881 km
Speed
7.618 km/s
True Right ascension
17h 59m 25s
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
06:48:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.776 km
Perigee altitude
497.529 km
Semi-major axis
6,878.289 km
Eccentricity
0.00038
Inclination
35.0032°
RAAN
269.857°
Arg. of periapsis
245.9408°
True anomaly
114.13059°
Mean anomaly
114.0907°
Eccentric anomaly
114.11065°
Mean motion
3.80472 °/min
Orbital period
94.62 mins
BSTAR
0.00030598
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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 | 2026-09-18 03:57:27.403Z | 187.123° SSW | 2026-09-18 03:59:27.403Z | 154.067° SSE | 15.022° | 2026-09-18 04:01:27.403Z | 121.902° SE |
| 5 mins | 2026-09-18 05:36:27.403Z | 223.409° SW | 2026-09-18 05:38:27.403Z | 176.712° S | 33.316° | 2026-09-18 05:41:27.403Z | 109.877° ESE |
| 5 mins | 2026-09-18 07:16:27.403Z | 235.531° WSW | 2026-09-18 07:18:27.403Z | 172.472° S | 37.371° | 2026-09-18 07:21:27.403Z | 118.062° SE |
| 4 mins | 2026-09-18 08:56:27.403Z | 222.958° SW | 2026-09-18 08:57:27.403Z | 201.392° SSW | 20.859° | 2026-09-18 09:00:27.403Z | 150.242° 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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