TJS-9, 50574
Orbit data source: Space-Track
TJS-9, 50574 is a payload satellite owned by CASC (CN) in GEO that was launched on Wed, 29 Dec 2021 UTC via a CHANG ZHENG 3B launch vehicle from the Xichang Space Center, China (XSC). 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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50574 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Defense Sigint
Bus & Motor
DFH-4?, DFH-4 LAE
Mass
~4,000 kg wet, ~2,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan + 1 Dish, 16.0 m
Radar Cross Section
35.403 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 3 hours ago
TLE from 3 hours ago
0 TJS-9
1 50574U 21135A 26240.68492355 -.00000298 00000-0 00000-0 0 9999
2 50574 0.0468 274.8840 0004550 85.6515 0.1700 1.00270450 17159Epoch: 2026-08-28T16:26Z
TLE epoch observation values (Epoch: 2026-08-28T16:26:17.394Z)
Latitude
0.00937°
Longitude
137.22459°
Altitude
35,767.212 km
Speed
3.076 km/s
True Right ascension
00h 02m 48s
True Declination
0° 00' 34"
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
10:45:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,807.225 km
Perigee altitude
35,768.854 km
Semi-major axis
42,166.177 km
Eccentricity
0.00046
Inclination
0.0468°
RAAN
274.884°
Arg. of periapsis
85.6515°
True anomaly
0.17015°
Mean anomaly
0.17°
Eccentric anomaly
0.17008°
Mean motion
0.25067 °/min
Orbital period
1,436.17 mins
BSTAR
0
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Other satellites on launch #135 in the year 2021 (2021-12-29 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-9 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. |
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| TJS-9 is likely not visible in the next few days. |
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50574 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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