SZ-21 MODULE, 66515
Orbit data source: Space-Track
SZ-21 MODULE, 66515 is a payload satellite owned by ZZHGB (CN) in LEO that was launched on Fri, 31 Oct 2025 UTC launched 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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66515 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Civil Spaceship
Bus & Motor
SHENZHOU OM, Unknown motor
Mass
~1,842 kg wet, ~1,500 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 14.5 m
Radar Cross Section
9.277 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 SZ-21 MODULE
1 66515U 25246C 26171.38315940 .00041738 00000-0 25384-3 0 9990
2 66515 41.4727 287.4171 0005787 13.1539 346.9456 15.76651737 34247Epoch: 2026-06-20T09:11Z
TLE epoch observation values (Epoch: 2026-06-20T09:11:44.972Z)
Latitude
0.00002°
Longitude
-119.11883°
Altitude
335.746 km
Speed
7.711 km/s
True Right ascension
19h 09m 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
10:19:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
346.072 km
Perigee altitude
338.293 km
Semi-major axis
6,720.32 km
Eccentricity
0.00058
Inclination
41.4727°
RAAN
287.4171°
Arg. of periapsis
13.1539°
True anomaly
346.93061°
Mean anomaly
346.9456°
Eccentric anomaly
346.93811°
Mean motion
3.93966 °/min
Orbital period
91.38 mins
BSTAR
0.00025384
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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 MODULE 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 | 2026-06-21 11:15:51.468Z | 220.463° SW | 2026-06-21 11:17:51.468Z | 172.754° S | 28.009° | 2026-06-21 11:19:51.468Z | 98.841° ESE |
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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