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: 8 hours ago
TLE from 8 hours ago
0 SHIYAN 27E
1 63603U 25078E 26171.51391985 .00000013 00000-0 79630-4 0 9991
2 63603 99.6889 178.6143 0001102 83.8639 276.2625 13.57242219 57985Epoch: 2026-06-20T12:20Z
TLE epoch observation values (Epoch: 2026-06-20T12:20:02.675Z)
Latitude
0.00001°
Longitude
84.8757°
Altitude
1,048.438 km
Speed
7.328 km/s
True Right ascension
11h 54m 27s
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
07:22:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.84 km
Perigee altitude
1,042.205 km
Semi-major axis
7,421.16 km
Eccentricity
0.00011
Inclination
99.6889°
RAAN
178.6143°
Arg. of periapsis
83.8639°
True anomaly
276.24995°
Mean anomaly
276.2625°
Eccentric anomaly
276.25622°
Mean motion
3.39497 °/min
Orbital period
106.04 mins
BSTAR
0.00007963
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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 | 2026-06-20 23:05:53.566Z | 110.987° ESE | 2026-06-20 23:10:53.566Z | 56.278° ENE | 22.751° | 2026-06-20 23:14:53.566Z | 13.773° NNE |
| 11 mins | 2026-06-21 00:49:53.566Z | 184.875° SSW | 2026-06-21 00:54:53.566Z | 266.471° W | 39.759° | 2026-06-21 01:00:53.566Z | 336.553° NNW |
| 7 mins | 2026-06-21 11:58:53.566Z | 60.268° ENE | 2026-06-21 12:01:53.566Z | 91.875° ESE | 16.96° | 2026-06-21 12:05:53.566Z | 131.409° SE |
| 11 mins | 2026-06-21 13:41:53.566Z | 8.831° NNE | 2026-06-21 13:46:53.566Z | 296.014° NW | 43.485° | 2026-06-21 13:52:53.566Z | 205.998° SW |
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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