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: 6 hours ago
TLE from 6 hours ago
0 SHIYAN 27E
1 63603U 25078E 26089.46723964 .00000024 00000-0 95390-4 0 9992
2 63603 99.6928 97.7975 0000914 99.0463 261.0779 13.57244964 46852Epoch: 2026-03-30T11:12Z
TLE epoch observation values (Epoch: 2026-03-30T11:12:49.504Z)
Latitude
-0.00003°
Longitude
101.73288°
Altitude
1,048.622 km
Speed
7.328 km/s
True Right ascension
06h 31m 11s
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
22:29:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.691 km
Perigee altitude
1,042.334 km
Semi-major axis
7,421.15 km
Eccentricity
0.00009
Inclination
99.6928°
RAAN
97.7975°
Arg. of periapsis
99.0463°
True anomaly
261.06755°
Mean anomaly
261.0779°
Eccentric anomaly
261.07273°
Mean motion
3.39497 °/min
Orbital period
106.04 mins
BSTAR
0.00009539
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-03-30 23:43:08.172Z | 136.846° SSE | 2026-03-30 23:48:08.172Z | 78.957° E | 35.812° | 2026-03-30 23:54:08.172Z | 358.564° N |
| 9 mins | 2026-03-31 01:29:08.172Z | 214.56° SW | 2026-03-31 01:33:08.172Z | 262.078° W | 25.395° | 2026-03-31 01:38:08.172Z | 319.085° NNW |
| 10 mins | 2026-03-31 12:36:08.172Z | 39.155° NE | 2026-03-31 12:40:08.172Z | 88.106° E | 30.227° | 2026-03-31 12:46:08.172Z | 161.561° S |
| 9 mins | 2026-03-31 14:21:08.172Z | 349.745° N | 2026-03-31 14:25:08.172Z | 294.709° NW | 31.255° | 2026-03-31 14:30:08.172Z | 233.215° WSW |
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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