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: 5 hours ago
TLE from 5 hours ago
0 SHIYAN 27A
1 63599U 25078A 25308.18779891 .00000047 00000-0 12802-3 0 9999
2 63599 99.6937 313.8014 0000694 99.7590 260.3626 13.57221236 27012Epoch: 2025-11-04T04:30Z
TLE epoch observation values (Epoch: 2025-11-04T04:30:25.825Z)
Latitude
-0.00011°
Longitude
-157.4846°
Altitude
1,048.69 km
Speed
7.328 km/s
True Right ascension
20h 55m 12s
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
05:21:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.614 km
Perigee altitude
1,042.584 km
Semi-major axis
7,421.236 km
Eccentricity
0.00007
Inclination
99.6937°
RAAN
313.8014°
Arg. of periapsis
99.759°
True anomaly
260.35476°
Mean anomaly
260.3626°
Eccentric anomaly
260.35868°
Mean motion
3.39491 °/min
Orbital period
106.04 mins
BSTAR
0.00012802
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-11-04 12:12:21.751Z | 45.864° ENE | 2025-11-04 12:16:21.751Z | 87.114° E | 21.34° | 2025-11-04 12:21:21.751Z | 141.794° SSE |
| 10 mins | 2025-11-04 13:57:21.751Z | 1.088° NNE | 2025-11-04 14:01:21.751Z | 305.492° NW | 39.486° | 2025-11-04 14:07:21.751Z | 215.597° SW |
| 11 mins | 2025-11-05 00:05:21.751Z | 150.082° SSE | 2025-11-05 00:10:21.751Z | 71.278° E | 42.721° | 2025-11-05 00:16:21.751Z | 351.186° N |
| 7 mins | 2025-11-05 01:52:21.751Z | 234.575° WSW | 2025-11-05 01:55:21.751Z | 266.924° W | 18.1° | 2025-11-05 01:59:21.751Z | 308.048° NW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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