SZ-21, 66263
Orbit data source: Space-Track
SZ-21, 66263 is a payload satellite owned by ZZHGB (CN) in LEO that was launched on Fri, 31 Oct 2025 UTC via an FALCON 9 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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66263 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CALT
Mission
Operational spacecraft
Bus & Motor
SHENZHOU, Unknown motor
Mass
~8,100 kg wet, 3,258 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
RCS unknown
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 SZ-21
1 66263U 25246A 25311.04013910 .00032955 00000-0 38997-3 0 9995
2 66263 41.4666 233.4859 0005699 336.2635 23.7940 15.60556280258135Epoch: 2025-11-07T00:57Z
TLE epoch observation values (Epoch: 2025-11-07T00:57:48.018Z)
Latitude
-0.00002°
Longitude
172.54599°
Altitude
382.122 km
Speed
7.685 km/s
True Right ascension
15h 33m 56s
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
17:59:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
392.139 km
Perigee altitude
384.426 km
Semi-major axis
6,766.419 km
Eccentricity
0.00057
Inclination
41.4666°
RAAN
233.4859°
Arg. of periapsis
336.2635°
True anomaly
23.82036°
Mean anomaly
23.794°
Eccentric anomaly
23.80718°
Mean motion
3.89946 °/min
Orbital period
92.32 mins
BSTAR
0.00038997
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Other satellites on launch #246 in the year 2025 (2025-10-31 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.SZ-21 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-11-07 22:41:30.660Z | 227.975° WSW | 2025-11-07 22:44:30.660Z | 146.395° SSE | 33.318° | 2025-11-07 22:46:30.660Z | 90.498° ESE |
| 4 mins | 2025-11-08 00:19:30.660Z | 273.781° WNW | 2025-11-08 00:21:30.660Z | 41.991° NE | 41.157° | 2025-11-08 00:23:30.660Z | 75.892° E |
| 4 mins | 2025-11-08 01:56:30.660Z | 286.108° WNW | 2025-11-08 01:58:30.660Z | 74.935° E | 42.145° | 2025-11-08 02:00:30.660Z | 96.417° ESE |
| 4 mins | 2025-11-08 03:33:30.660Z | 251.441° W | 2025-11-08 03:34:30.660Z | 221.171° SW | 26.797° | 2025-11-08 03:37:30.660Z | 143.386° SSE |
| 4 mins | 2025-11-08 21:43:30.660Z | 197.068° SSW | 2025-11-08 21:45:30.660Z | 139.599° SSE | 22.923° | 2025-11-08 21:47:30.660Z | 96.611° ESE |
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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