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: 6 days ago
TLE from 6 days ago
0 SZ-21
1 66263U 25246A 25333.25988665 .00015582 00000-0 20255-3 0 9995
2 66263 41.4663 98.4914 0010669 292.2705 67.7001 15.58389811258132Epoch: 2025-11-29T06:14Z
TLE epoch observation values (Epoch: 2025-11-29T06:14:14.206Z)
Latitude
-0.00004°
Longitude
-63.45849°
Altitude
389.182 km
Speed
7.68 km/s
True Right ascension
06h 33m 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
12:01:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
401.774 km
Perigee altitude
387.322 km
Semi-major axis
6,772.685 km
Eccentricity
0.00107
Inclination
41.4663°
RAAN
98.4914°
Arg. of periapsis
292.2705°
True anomaly
67.81327°
Mean anomaly
67.7001°
Eccentric anomaly
67.75668°
Mean motion
3.89405 °/min
Orbital period
92.45 mins
BSTAR
0.00020255
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-12-05 14:59:20.094Z | 253.68° W | 2025-12-05 15:01:20.094Z | 203.55° SW | 21.224° | 2025-12-05 15:03:20.094Z | 159.805° S |
| 4 mins | 2025-12-06 09:11:20.094Z | 210.277° SW | 2025-12-06 09:13:20.094Z | 135.618° SSE | 29.922° | 2025-12-06 09:15:20.094Z | 90.547° ESE |
| 4 mins | 2025-12-06 10:48:20.094Z | 271.313° WNW | 2025-12-06 10:50:20.094Z | 53.86° ENE | 40.113° | 2025-12-06 10:52:20.094Z | 76.099° E |
| 4 mins | 2025-12-06 12:25:20.094Z | 287.024° WNW | 2025-12-06 12:27:20.094Z | 65.599° ENE | 41.823° | 2025-12-06 12:29:20.094Z | 93.391° 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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