TJS-4, 44637
Orbit data source: Space-Track
TJS-4, 44637 is a payload satellite owned by CASC (CN) in GEO that was launched on Thu, 17 Oct 2019 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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44637 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, Unknown HBR
Radar Cross Section
35.403 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 TJS-4
1 44637U 19070A 26194.79143211 -.00000174 00000-0 00000+0 0 9993
2 44637 0.0805 87.0954 0003153 320.8189 252.1810 1.00269260 24804Epoch: 2026-07-13T18:59Z
TLE epoch observation values (Epoch: 2026-07-13T18:59:39.734Z)
Latitude
-0.06688°
Longitude
83.48939°
Altitude
35,790.915 km
Speed
3.074 km/s
True Right ascension
20h 00m 18s
True Declination
0° 04' 01"
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
05:24:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,801.668 km
Perigee altitude
35,775.078 km
Semi-major axis
42,166.51 km
Eccentricity
0.00032
Inclination
0.0805°
RAAN
87.0954°
Arg. of periapsis
320.8189°
True anomaly
252.14661°
Mean anomaly
252.181°
Eccentric anomaly
252.1638°
Mean motion
0.25066 °/min
Orbital period
1,436.19 mins
BSTAR
0
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Other satellites on launch #70 in the year 2019 (2019-10-17 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-4 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-4 is likely not visible in the next few days. |
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44637 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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