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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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: 12 hours ago
TLE from 12 hours ago
0 SHIYAN 27A
1 63599U 25078A 26171.48926955 -.00000009 00000-0 48678-4 0 9996
2 63599 99.6894 178.6680 0001123 82.4800 277.6466 13.57250768 57985Epoch: 2026-06-20T11:44Z
TLE epoch observation values (Epoch: 2026-06-20T11:44:32.889Z)
Latitude
0.00001°
Longitude
93.8278°
Altitude
1,048.385 km
Speed
7.328 km/s
True Right ascension
11h 54m 40s
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
10:19:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.825 km
Perigee altitude
1,042.158 km
Semi-major axis
7,421.128 km
Eccentricity
0.00011
Inclination
99.6894°
RAAN
178.668°
Arg. of periapsis
82.48°
True anomaly
277.63385°
Mean anomaly
277.6466°
Eccentric anomaly
277.64022°
Mean motion
3.39499 °/min
Orbital period
106.04 mins
BSTAR
0.000048678
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-06-21 00:13:19.204Z | 158.429° S | 2026-06-21 00:19:19.204Z | 112.549° SE | 44.212° | 2026-06-21 00:25:19.204Z | 348.156° N |
| 6 mins | 2026-06-21 02:02:19.204Z | 243.18° WSW | 2026-06-21 02:05:19.204Z | 273.89° WNW | 14.949° | 2026-06-21 02:08:19.204Z | 302.706° NW |
| 11 mins | 2026-06-21 13:07:19.204Z | 25.16° NE | 2026-06-21 13:12:19.204Z | 117.049° SE | 41.609° | 2026-06-21 13:18:19.204Z | 183.406° SSW |
| 7 mins | 2026-06-21 14:53:19.204Z | 332.339° NNW | 2026-06-21 14:56:19.204Z | 296.36° NW | 20.885° | 2026-06-21 15:00:19.204Z | 254.752° W |
| 6 mins | 2026-06-21 23:17:19.204Z | 108.837° ESE | 2026-06-21 23:21:19.204Z | 56.098° ENE | 25.959° | 2026-06-21 23:23:19.204Z | 28.351° NE |
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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