SHIYAN 12 01 (SY-12 01), 50321
Orbit data source: Space-Track
SHIYAN 12 01 (SY-12 01), 50321 is a payload satellite owned by CAST (CN) in GEO that was launched on Thu, 23 Dec 2021 UTC via a CHANG ZHENG 7A launch vehicle from the Wenchang Satellite Launch Center (WSC). 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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50321 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Defense Technology
Bus & Motor
XYZ, Unknown motor
Mass
~3,000 kg wet, ~2,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 4.5 m
Radar Cross Section
24.336 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SHIYAN 12 01 (SY-12 01)
1 50321U 21129A 26219.72845329 .00000082 00000-0 00000+0 0 9995
2 50321 3.8021 79.1982 0001421 250.1116 267.7983 1.00047051 17016Epoch: 2026-08-07T17:28Z
TLE epoch observation values (Epoch: 2026-08-07T17:28:58.364Z)
Latitude
1.44054°
Longitude
18.64799°
Altitude
35,849.25 km
Speed
3.072 km/s
True Right ascension
15h 48m 33s
True Declination
1° 26' 21"
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
15:43:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,856.777 km
Perigee altitude
35,844.775 km
Semi-major axis
42,228.913 km
Eccentricity
0.00014
Inclination
3.8021°
RAAN
79.1982°
Arg. of periapsis
250.1116°
True anomaly
267.78203°
Mean anomaly
267.7983°
Eccentric anomaly
267.79016°
Mean motion
0.25011 °/min
Orbital period
1,439.38 mins
BSTAR
0
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Other satellites on launch #129 in the year 2021 (2021-12-23 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.SHIYAN 12 01 (SY-12 01) Visibility
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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. |
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| SHIYAN 12 01 (SY-12 01) is likely not visible in the next few days. |
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50321 neighbors
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Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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