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: 1 week ago
TLE from 1 week ago
0 YAOGAN-39 01A
1 57727U 23130A 26072.76220928 .00004272 00000-0 17850-3 0 9999
2 57727 35.0038 8.8473 0003568 333.6129 26.4404 15.23048750141155Epoch: 2026-03-13T18:17Z
TLE epoch observation values (Epoch: 2026-03-13T18:17:34.881Z)
Latitude
-0.00001°
Longitude
-76.94114°
Altitude
493.363 km
Speed
7.622 km/s
True Right ascension
00h 35m 23s
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
17:26:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.355 km
Perigee altitude
497.446 km
Semi-major axis
6,878.038 km
Eccentricity
0.00036
Inclination
35.0038°
RAAN
8.8473°
Arg. of periapsis
333.6129°
True anomaly
26.45861°
Mean anomaly
26.4404°
Eccentric anomaly
26.44951°
Mean motion
3.80493 °/min
Orbital period
94.61 mins
BSTAR
0.0001785
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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 | 2026-03-21 20:01:58.296Z | 208.034° SW | 2026-03-21 20:04:58.296Z | 152.375° SSE | 19.589° | 2026-03-21 20:06:58.296Z | 116.711° SE |
| 5 mins | 2026-03-21 21:41:58.296Z | 230.698° WSW | 2026-03-21 21:43:58.296Z | 175.921° S | 31.37° | 2026-03-21 21:46:58.296Z | 110.685° ESE |
| 4 mins | 2026-03-21 23:21:58.296Z | 232.067° WSW | 2026-03-21 23:22:58.296Z | 206.605° SW | 27.084° | 2026-03-21 23:25:58.296Z | 134.543° 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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