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: 14 hours ago
TLE from 14 hours ago
0 SHIYAN 27E
1 63603U 25078E 25349.34680359 .00000031 00000-0 10580-3 0 9992
2 63603 99.6917 354.2653 0000738 90.1954 269.9269 13.57229330 32592Epoch: 2025-12-15T08:19Z
TLE epoch observation values (Epoch: 2025-12-15T08:19:23.830Z)
Latitude
0°
Longitude
145.16933°
Altitude
1,048.575 km
Speed
7.328 km/s
True Right ascension
23h 37m 03s
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
21:17:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.617 km
Perigee altitude
1,042.522 km
Semi-major axis
7,421.207 km
Eccentricity
0.00007
Inclination
99.6917°
RAAN
354.2653°
Arg. of periapsis
90.1954°
True anomaly
269.91844°
Mean anomaly
269.9269°
Eccentric anomaly
269.92267°
Mean motion
3.39493 °/min
Orbital period
106.04 mins
BSTAR
0.0001058
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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 | 2025-12-15 22:40:09.102Z | 84.885° E | 2025-12-15 22:43:09.102Z | 55.06° ENE | 14.943° | 2025-12-15 22:46:09.102Z | 25.825° NE |
| 11 mins | 2025-12-16 00:22:09.102Z | 162.709° S | 2025-12-16 00:27:09.102Z | 351.724° N | 44.539° | 2025-12-16 00:33:09.102Z | 345.703° N |
| 11 mins | 2025-12-16 13:14:09.102Z | 21.348° NNE | 2025-12-16 13:19:09.102Z | 106.34° ESE | 43.485° | 2025-12-16 13:25:09.102Z | 187.35° SSW |
| 7 mins | 2025-12-16 15:00:09.102Z | 333.127° NNW | 2025-12-16 15:03:09.102Z | 299.727° NW | 18.95° | 2025-12-16 15:07:09.102Z | 259.111° W |
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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