YAOGAN-31 M, 47857
Orbit data source: Space-Track
YAOGAN-31 M, 47857 is a payload satellite owned by PLA SSF (CN) in LEO that was launched on Sat, 13 Mar 2021 UTC via a CHANG ZHENG 4C launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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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47857 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
DFH
Mission
Operational Defense Sigint
Bus & Motor
Unknown
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.5 m
Radar Cross Section
0.446 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 YAOGAN-31 M
1 47857U 21020D 26172.54487937 -.00000033 00000-0 87246-4 0 9999
2 47857 63.4057 246.8782 0175146 0.3870 359.7261 13.45448321259045Epoch: 2026-06-21T13:04Z
TLE epoch observation values (Epoch: 2026-06-21T13:04:37.577Z)
Latitude
-0.00002°
Longitude
140.978°
Altitude
960.023 km
Speed
7.436 km/s
True Right ascension
16h 27m 30s
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
21:30:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,218.645 km
Perigee altitude
957.116 km
Semi-major axis
7,466.017 km
Eccentricity
0.01751
Inclination
63.4057°
RAAN
246.8782°
Arg. of periapsis
0.387°
True anomaly
359.71629°
Mean anomaly
359.7261°
Eccentric anomaly
359.72122°
Mean motion
3.36442 °/min
Orbital period
107 mins
BSTAR
0.000087246
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Other satellites on launch #20 in the year 2021 (2021-03-13 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-31 M 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-22 12:44:57.295Z | 357.638° N | 2026-06-22 12:47:57.295Z | 24.267° NE | 14.153° | 2026-06-22 12:50:57.295Z | 50.497° ENE |
| 12 mins | 2026-06-22 14:34:57.295Z | 340.245° N | 2026-06-22 14:40:57.295Z | 58.373° ENE | 35.593° | 2026-06-22 14:46:57.295Z | 118.161° SE |
| 12 mins | 2026-06-22 16:25:57.295Z | 306.239° NW | 2026-06-22 16:30:57.295Z | 247.825° W | 33.467° | 2026-06-22 16:37:57.295Z | 179.014° S |
| 11 mins | 2026-06-23 06:13:57.295Z | 194.91° SSW | 2026-06-23 06:18:57.295Z | 107.853° ESE | 41.475° | 2026-06-23 06:24:57.295Z | 40.332° NE |
| 9 mins | 2026-06-23 08:05:57.295Z | 272.437° WNW | 2026-06-23 08:09:57.295Z | 323.311° NNW | 25.461° | 2026-06-23 08:14:57.295Z | 15.65° NNE |
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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