SHIYAN 27A, 63599
Orbit data source: Space-Track
SHIYAN 27A, 63599 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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63599 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, 2.4 m
Radar Cross Section
13.200 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 SHIYAN 27A
1 63599U 25078A 25286.95702608 .00000035 00000-0 11162-3 0 9996
2 63599 99.6941 292.8892 0000664 89.4522 270.6692 13.57217920 24137Epoch: 2025-10-13T22:58Z
TLE epoch observation values (Epoch: 2025-10-13T22:58:07.053Z)
Latitude
-0.00005°
Longitude
-74.39254°
Altitude
1,048.61 km
Speed
7.328 km/s
True Right ascension
19h 31m 33s
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
02:05:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.604 km
Perigee altitude
1,042.619 km
Semi-major axis
7,421.248 km
Eccentricity
0.00007
Inclination
99.6941°
RAAN
292.8892°
Arg. of periapsis
89.4522°
True anomaly
270.66159°
Mean anomaly
270.6692°
Eccentric anomaly
270.6654°
Mean motion
3.39491 °/min
Orbital period
106.04 mins
BSTAR
0.00011162
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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 27A 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-14 11:59:10.242Z | 52.871° ENE | 2025-10-14 12:03:10.242Z | 93.069° ESE | 17.004° | 2025-10-14 12:06:10.242Z | 124.299° SE |
| 11 mins | 2025-10-14 13:43:10.242Z | 8.615° NNE | 2025-10-14 13:48:10.242Z | 288.519° WNW | 43.483° | 2025-10-14 13:54:10.242Z | 205.986° SW |
| 10 mins | 2025-10-14 23:52:10.242Z | 138.854° SSE | 2025-10-14 23:57:10.242Z | 55.927° ENE | 38.394° | 2025-10-15 00:02:10.242Z | 356.887° N |
| 8 mins | 2025-10-15 01:38:10.242Z | 224.272° SW | 2025-10-15 01:41:10.242Z | 259.045° W | 22.552° | 2025-10-15 01:46:10.242Z | 315.187° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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