SJ-30B, 66546
Orbit data source: Space-Track
SJ-30B, 66546 is a payload satellite owned by CASC (CN) in LEO that was launched on Wed, 19 Nov 2025 UTC via a CHANG ZHENG 2C launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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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66546 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SAST
Mission
Operational Defense Technology
Bus & Motor
SJ30, Unknown motor
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 14.5 m
Radar Cross Section
3.585 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 SJ-30B
1 66546U 25266B 26171.47025020 .00005860 00000-0 32160-3 0 9999
2 66546 51.7960 163.9908 0007294 265.9615 94.0527 15.15472185 32358Epoch: 2026-06-20T11:17Z
TLE epoch observation values (Epoch: 2026-06-20T11:17:09.617Z)
Latitude
-0.00006°
Longitude
86.01627°
Altitude
520.652 km
Speed
7.604 km/s
True Right ascension
10h 55m 57s
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
07:12:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
525.052 km
Perigee altitude
514.989 km
Semi-major axis
6,898.158 km
Eccentricity
0.00073
Inclination
51.796°
RAAN
163.9908°
Arg. of periapsis
265.9615°
True anomaly
94.13607°
Mean anomaly
94.0527°
Eccentric anomaly
94.09438°
Mean motion
3.78829 °/min
Orbital period
95.03 mins
BSTAR
0.0003216
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Other satellites on launch #266 in the year 2025 (2025-11-19 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.SJ-30B 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-21 01:41:05.734Z | 198.05° SSW | 2026-06-21 01:44:05.734Z | 144.893° SSE | 29.096° | 2026-06-21 01:47:05.734Z | 75.358° E |
| 5 mins | 2026-06-21 03:21:05.734Z | 273.28° WNW | 2026-06-21 03:23:05.734Z | 319.796° NNW | 30.975° | 2026-06-21 03:26:05.734Z | 33.222° NE |
| 4 mins | 2026-06-21 06:42:05.734Z | 346.455° N | 2026-06-21 06:43:05.734Z | 4.171° NNE | 16.424° | 2026-06-21 06:46:05.734Z | 54.207° ENE |
| 6 mins | 2026-06-21 08:21:05.734Z | 326.279° NNW | 2026-06-21 08:23:05.734Z | 21.539° NNE | 36.99° | 2026-06-21 08:27:05.734Z | 108.443° ESE |
| 5 mins | 2026-06-21 10:00:05.734Z | 269.502° W | 2026-06-21 10:02:05.734Z | 228.435° WSW | 22.131° | 2026-06-21 10:05:05.734Z | 175.848° S |
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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