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: 5 hours ago
TLE from 5 hours ago
0 SHIYAN 27E
1 63603U 25078E 25363.86912720 .00000054 00000-0 13740-3 0 9991
2 63603 99.6917 8.5648 0000723 87.8510 272.2711 13.57231433 34565Epoch: 2025-12-29T20:51Z
TLE epoch observation values (Epoch: 2025-12-29T20:51:32.590Z)
Latitude
-0.00001°
Longitude
-42.88156°
Altitude
1,048.545 km
Speed
7.328 km/s
True Right ascension
00h 34m 15s
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
01:48:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.599 km
Perigee altitude
1,042.526 km
Semi-major axis
7,421.199 km
Eccentricity
0.00007
Inclination
99.6917°
RAAN
8.5648°
Arg. of periapsis
87.851°
True anomaly
272.26282°
Mean anomaly
272.2711°
Eccentric anomaly
272.26696°
Mean motion
3.39494 °/min
Orbital period
106.04 mins
BSTAR
0.0001374
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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 | 2025-12-30 13:23:20.430Z | 17.493° NNE | 2025-12-30 13:28:20.430Z | 149.521° SSE | 44.592° | 2025-12-30 13:34:20.430Z | 193.353° SSW |
| 6 mins | 2025-12-30 15:09:20.430Z | 329.157° NNW | 2025-12-30 15:12:20.430Z | 297.081° NW | 16.404° | 2025-12-30 15:15:20.430Z | 267.707° W |
| 10 mins | 2025-12-30 23:32:20.430Z | 124.522° SE | 2025-12-30 23:36:20.430Z | 74.695° E | 31.469° | 2025-12-30 23:42:20.430Z | 1.804° NNE |
| 9 mins | 2025-12-31 01:17:20.430Z | 208.177° SW | 2025-12-31 01:21:20.430Z | 263.027° W | 30.026° | 2025-12-31 01:26:20.430Z | 323.594° NNW |
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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