SHIYAN 27E, 63603
Orbit data source: Space-Track
SHIYAN 27E, 63603 is a payload satellite owned by CAST (CN) in SSO that was launched on Fri, 18 Apr 2025 UTC via a CHANG ZHENG 6A launch vehicle from the Taiyaun Space Center, China (TSC). 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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63603 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Defense Radar Imaging
Bus & Motor
SW27, Unknown motor
Mass
300 kg wet, ~300 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 2.1 m
Radar Cross Section
13.200 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SHIYAN 27E
1 63603U 25078E 25303.27327706 .00000041 00000-0 11881-3 0 9994
2 63603 99.6931 308.8941 0000724 92.9045 267.2176 13.57221134 26347Epoch: 2025-10-30T06:33Z
TLE epoch observation values (Epoch: 2025-10-30T06:33:31.137Z)
Latitude
-0.00007°
Longitude
171.67995°
Altitude
1,048.63 km
Speed
7.328 km/s
True Right ascension
20h 35m 34s
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
10:31:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.637 km
Perigee altitude
1,042.562 km
Semi-major axis
7,421.237 km
Eccentricity
0.00007
Inclination
99.6931°
RAAN
308.8941°
Arg. of periapsis
92.9045°
True anomaly
267.20931°
Mean anomaly
267.2176°
Eccentric anomaly
267.21346°
Mean motion
3.39491 °/min
Orbital period
106.04 mins
BSTAR
0.00011881
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Other satellites on launch #78 in the year 2025 (2025-04-18 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 27E 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 | 2025-10-30 22:40:19.098Z | 85.856° E | 2025-10-30 22:43:19.098Z | 56.271° ENE | 14.98° | 2025-10-30 22:46:19.098Z | 26.728° NE |
| 11 mins | 2025-10-31 00:22:19.098Z | 162.807° S | 2025-10-31 00:27:19.098Z | 353.288° N | 44.751° | 2025-10-31 00:33:19.098Z | 345.649° N |
| 11 mins | 2025-10-31 13:14:19.098Z | 21.066° NNE | 2025-10-31 13:19:19.098Z | 97.637° ESE | 43.497° | 2025-10-31 13:25:19.098Z | 187.263° SSW |
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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