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, 5.0 m
Radar Cross Section
13.200 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 19 hours ago
TLE from 19 hours ago
0 SHIYAN 27E
1 63603U 25078E 25256.31484115 .00000000 00000-0 62044-4 0 9997
2 63603 99.6939 262.6381 0000872 81.1171 279.0066 13.57212893 19976Epoch: 2025-09-13T07:33Z
TLE epoch observation values (Epoch: 2025-09-13T07:33:22.275Z)
Latitude
-0.00002°
Longitude
156.74532°
Altitude
1,048.533 km
Speed
7.328 km/s
True Right ascension
17h 30m 33s
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
19:02:20
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.777 km
Perigee altitude
1,042.483 km
Semi-major axis
7,421.267 km
Eccentricity
0.00009
Inclination
99.6939°
RAAN
262.6381°
Arg. of periapsis
81.1171°
True anomaly
278.99673°
Mean anomaly
279.0066°
Eccentric anomaly
279.00167°
Mean motion
3.39489 °/min
Orbital period
106.04 mins
BSTAR
0.000062044
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-09-14 12:28:30.524Z | 38.137° NE | 2025-09-14 12:33:30.524Z | 95.489° ESE | 27.57° | 2025-09-14 12:38:30.524Z | 154.027° SSE |
| 10 mins | 2025-09-14 14:13:30.524Z | 356.141° N | 2025-09-14 14:18:30.524Z | 286.138° WNW | 33.888° | 2025-09-14 14:23:30.524Z | 227.191° WSW |
| 5 mins | 2025-09-14 22:41:30.524Z | 73.775° E | 2025-09-14 22:43:30.524Z | 52.807° ENE | 14.869° | 2025-09-14 22:46:30.524Z | 24.164° NE |
| 11 mins | 2025-09-15 00:21:30.524Z | 162.63° S | 2025-09-15 00:26:30.524Z | 154.423° SSE | 44.634° | 2025-09-15 00:32:30.524Z | 345.656° N |
| 4 mins | 2025-09-15 02:10:30.524Z | 253.606° W | 2025-09-15 02:12:30.524Z | 273.409° WNW | 13.047° | 2025-09-15 02:14:30.524Z | 292.662° NW |
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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