TJS-20, 66142
Orbit data source: Space-Track
TJS-20, 66142 is a Chinese payload satellite in GEO 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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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Defense Sigint
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
Box + 2 Pan + 1 Dish, 15.0 m
Radar Cross Section
63.841 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 TJS-20
1 66142U 25238A 26285.67059475 .00000017 00000-0 00000-0 0 9993
2 66142 5.2158 299.1759 0002863 262.9368 123.0058 1.00268957 3515Epoch: 2026-10-12T16:05Z
TLE epoch observation values (Epoch: 2026-10-12T16:05:39.386Z)
Latitude
2.3031°
Longitude
62.37456°
Altitude
35,793.233 km
Speed
3.074 km/s
True Right ascension
21h 40m 08s
True Declination
2° 18' 03"
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
23:19:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,800.517 km
Perigee altitude
35,776.373 km
Semi-major axis
42,166.582 km
Eccentricity
0.00029
Inclination
5.2158°
RAAN
299.1759°
Arg. of periapsis
262.9368°
True anomaly
123.03331°
Mean anomaly
123.0058°
Eccentric anomaly
123.01955°
Mean motion
0.25066 °/min
Orbital period
1,436.19 mins
BSTAR
0
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Other satellites on launch #238 in the year 2025 (2025-10-23 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.TJS-20 Visibility
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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. |
|---|---|---|---|---|---|---|---|
| TJS-20 is likely not visible in the next few days. |
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66142 neighbors
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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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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 descending order |
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