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: 10 hours ago
TLE from 10 hours ago
0 SHIYAN 27A
1 63599U 25078A 25337.96975865 .00000056 00000-0 13993-3 0 9998
2 63599 99.6924 343.1311 0000788 96.4229 263.6999 13.57226477 31051Epoch: 2025-12-03T23:16Z
TLE epoch observation values (Epoch: 2025-12-03T23:16:27.147Z)
Latitude
-0.00002°
Longitude
-79.01493°
Altitude
1,048.649 km
Speed
7.328 km/s
True Right ascension
22h 52m 31s
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
07:31:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,043.665 km
Perigee altitude
1,042.495 km
Semi-major axis
7,421.217 km
Eccentricity
0.00008
Inclination
99.6924°
RAAN
343.1311°
Arg. of periapsis
96.4229°
True anomaly
263.69092°
Mean anomaly
263.6999°
Eccentric anomaly
263.69541°
Mean motion
3.39493 °/min
Orbital period
106.04 mins
BSTAR
0.00013993
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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 | 2025-12-04 12:16:29.999Z | 42.717° NE | 2025-12-04 12:21:29.999Z | 97.171° ESE | 23.061° | 2025-12-04 12:25:29.999Z | 141.99° SSE |
| 10 mins | 2025-12-04 14:01:29.999Z | 0.219° NNE | 2025-12-04 14:06:29.999Z | 280.079° WNW | 38.117° | 2025-12-04 14:11:29.999Z | 219.261° SW |
| 11 mins | 2025-12-05 00:09:29.999Z | 153.797° SSE | 2025-12-05 00:14:29.999Z | 91.787° ESE | 43.526° | 2025-12-05 00:20:29.999Z | 350.014° N |
| 6 mins | 2025-12-05 01:57:29.999Z | 242.682° WSW | 2025-12-05 01:59:29.999Z | 263.919° W | 16.601° | 2025-12-05 02:03:29.999Z | 304.799° NW |
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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