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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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: 4 hours ago
TLE from 4 hours ago
0 SHIYAN 27E
1 63603U 25078E 26223.85270240 -.00000005 00000-0 55488-4 0 9993
2 63603 99.6917 230.1676 0000971 92.0820 268.0429 13.57247100 65084Epoch: 2026-08-11T20:27Z
TLE epoch observation values (Epoch: 2026-08-11T20:27:53.487Z)
Latitude
-0.00007°
Longitude
-37.12029°
Altitude
1,048.534 km
Speed
7.328 km/s
True Right ascension
15h 20m 40s
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
14:31:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.726 km
Perigee altitude
1,042.284 km
Semi-major axis
7,421.142 km
Eccentricity
0.0001
Inclination
99.6917°
RAAN
230.1676°
Arg. of periapsis
92.082°
True anomaly
268.03178°
Mean anomaly
268.0429°
Eccentric anomaly
268.03734°
Mean motion
3.39498 °/min
Orbital period
106.04 mins
BSTAR
0.000055488
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-08-12 00:10:27.295Z | 139.185° SSE | 2026-08-12 00:12:27.295Z | 66.402° ENE | 43.396° | 2026-08-12 00:18:27.295Z | 350.121° N |
| 7 mins | 2026-08-12 01:54:27.295Z | 236.219° WSW | 2026-08-12 01:57:27.295Z | 267.775° W | 17.118° | 2026-08-12 02:01:27.295Z | 307.775° NW |
| 11 mins | 2026-08-12 12:59:27.295Z | 26.381° NE | 2026-08-12 13:04:27.295Z | 92.638° ESE | 39.561° | 2026-08-12 13:10:27.295Z | 177.821° S |
| 8 mins | 2026-08-12 14:45:27.295Z | 339.09° N | 2026-08-12 14:48:27.295Z | 304.149° NW | 22.899° | 2026-08-12 14:53:27.295Z | 248.956° W |
| 8 mins | 2026-08-12 23:10:27.295Z | 101.941° ESE | 2026-08-12 23:13:27.295Z | 64.969° ENE | 23.866° | 2026-08-12 23:18:27.295Z | 10.456° 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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