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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
63603 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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: 5 hours ago
TLE from 5 hours ago
0 SHIYAN 27E
1 63603U 25078E 26269.63055926 .00000002 00000-0 64185-4 0 9991
2 63603 99.6939 275.2675 0001026 86.5112 273.6144 13.57251160 71298Epoch: 2026-09-26T15:08Z
TLE epoch observation values (Epoch: 2026-09-26T15:08:00.320Z)
Latitude
0.00003°
Longitude
42.8303°
Altitude
1,048.447 km
Speed
7.328 km/s
True Right ascension
18h 21m 04s
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
13:40:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.752 km
Perigee altitude
1,042.229 km
Semi-major axis
7,421.127 km
Eccentricity
0.0001
Inclination
99.6939°
RAAN
275.2675°
Arg. of periapsis
86.5112°
True anomaly
273.60267°
Mean anomaly
273.6144°
Eccentric anomaly
273.60853°
Mean motion
3.39499 °/min
Orbital period
106.04 mins
BSTAR
0.000064185
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #78 in the year 2025 (2025-04-18 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-09-26 22:25:24.109Z | 72.855° E | 2026-09-26 22:27:24.109Z | 54.446° ENE | 11.763° | 2026-09-26 22:29:24.109Z | 35.856° NE |
| 10 mins | 2026-09-27 00:06:24.109Z | 150.367° SSE | 2026-09-27 00:11:24.109Z | 44.21° NE | 67.019° | 2026-09-27 00:16:24.109Z | 351.425° N |
| 6 mins | 2026-09-27 01:53:24.109Z | 239.26° WSW | 2026-09-27 01:56:24.109Z | 272.273° WNW | 18.45° | 2026-09-27 01:59:24.109Z | 303.217° NW |
| 11 mins | 2026-09-27 12:58:24.109Z | 28.103° NE | 2026-09-27 13:03:24.109Z | 105.051° ESE | 54.813° | 2026-09-27 13:09:24.109Z | 177.922° S |
| 9 mins | 2026-09-27 14:43:24.109Z | 344.461° N | 2026-09-27 14:47:24.109Z | 299.248° NW | 25.747° | 2026-09-27 14:52:24.109Z | 246.378° 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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|