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: 14 hours ago
TLE from 14 hours ago
0 SHIYAN 27E
1 63603U 25078E 25260.29562983 .00000005 00000-0 69164-4 0 9994
2 63603 99.6935 266.5596 0000847 81.8422 278.2813 13.57213320 20510Epoch: 2025-09-17T07:05Z
TLE epoch observation values (Epoch: 2025-09-17T07:05:42.417Z)
Latitude
0.00005°
Longitude
163.65923°
Altitude
1,048.542 km
Speed
7.328 km/s
True Right ascension
17h 46m 14s
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
13:55:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.757 km
Perigee altitude
1,042.5 km
Semi-major axis
7,421.265 km
Eccentricity
0.00008
Inclination
99.6935°
RAAN
266.5596°
Arg. of periapsis
81.8422°
True anomaly
278.2717°
Mean anomaly
278.2813°
Eccentric anomaly
278.2765°
Mean motion
3.39489 °/min
Orbital period
106.04 mins
BSTAR
0.000069164
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-17 23:09:51.861Z | 113.185° SE | 2025-09-17 23:14:51.861Z | 57.814° ENE | 23.836° | 2025-09-17 23:18:51.861Z | 13.729° NNE |
| 11 mins | 2025-09-18 00:53:51.861Z | 186.804° SSW | 2025-09-18 00:58:51.861Z | 261.642° W | 38.701° | 2025-09-18 01:04:51.861Z | 335.165° NNW |
| 7 mins | 2025-09-18 12:02:51.861Z | 58.276° ENE | 2025-09-18 12:05:51.861Z | 90.273° ESE | 17.991° | 2025-09-18 12:09:51.861Z | 131.629° SE |
| 11 mins | 2025-09-18 13:45:51.861Z | 7.735° NNE | 2025-09-18 13:50:51.861Z | 302.617° NW | 42.664° | 2025-09-18 13:56:51.861Z | 208.338° SW |
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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