TJS-20, 66142
Orbit data source: Space-Track
TJS-20, 66142 is a Chinese payload satellite in HEO that was launched on Thu, 23 Oct 2025 UTC via a CHANG ZHENG 5 launch vehicle from the Wenchang Satellite Launch Center (WSC). 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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66142 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational spacecraft
Bus & Motor
TJS11, Unknown motor
Mass
~10,000 kg wet, ~6,000 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: 1 week ago
TLE from 1 week ago
0 TJS-20
1 66142U 25238A 25297.02128061 .00007775 15255-5 89266-3 0 9997
2 66142 16.4249 273.2021 7763057 165.3209 248.2978 1.72601617 28Epoch: 2025-10-24T00:30Z
TLE epoch observation values (Epoch: 2025-10-24T00:30:38.644Z)
Latitude
0.00006°
Longitude
-127.21006°
Altitude
40,434.952 km
Speed
1.858 km/s
True Right ascension
18h 12m 29s
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
15:45:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
45,777.497 km
Perigee altitude
189.943 km
Semi-major axis
29,361.857 km
Eccentricity
0.77631
Inclination
16.4249°
RAAN
273.2021°
Arg. of periapsis
165.3209°
True anomaly
194.64687°
Mean anomaly
248.2978°
Eccentric anomaly
219.8165°
Mean motion
0.43139 °/min
Orbital period
834.52 mins
BSTAR
0.00089266
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Other satellites on launch #238 in the year 2025 (2025-10-23 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.TJS-20 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. |
|---|---|---|---|---|---|---|---|
| 425 mins | 2025-10-31 20:04:56.047Z | 184.368° SSW | 2025-10-31 21:42:56.047Z | 199.926° SSW | 29.552° | 2025-11-01 03:09:56.047Z | 256.249° W |
| 5 mins | 2025-11-01 07:05:56.047Z | 243.015° WSW | 2025-11-01 07:08:56.047Z | 233.205° WSW | 10.852° | 2025-11-01 07:10:56.047Z | 223.89° SW |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
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