TIANTONG-1 1, 41725
Orbit data source: Space-Track
TIANTONG-1 1, 41725 is a payload satellite owned by CAST (CN) in GEO that was launched on Fri, 05 Aug 2016 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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41725 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Civil Communications
Bus & Motor
DFH-4, DFH-4 LAE
Mass
~5,200 kg wet, ~2,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 15.0 m
Radar Cross Section
34.063 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 TIANTONG-1 1
1 41725U 16048A 26296.20342718 -.00000304 00000-0 00000+0 0 9997
2 41725 4.0982 44.2131 0000359 140.9085 21.1838 1.00269907 37550Epoch: 2026-10-23T04:52Z
TLE epoch observation values (Epoch: 2026-10-23T04:52:56.108Z)
Latitude
1.25316°
Longitude
101.45302°
Altitude
35,785.044 km
Speed
3.075 km/s
True Right ascension
13h 45m 15s
True Declination
1° 15' 07"
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
06:14:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,789.698 km
Perigee altitude
35,786.67 km
Semi-major axis
42,166.321 km
Eccentricity
0.00004
Inclination
4.0982°
RAAN
44.2131°
Arg. of periapsis
140.9085°
True anomaly
21.18529°
Mean anomaly
21.1838°
Eccentric anomaly
21.18454°
Mean motion
0.25067 °/min
Orbital period
1,436.18 mins
BSTAR
0
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Other satellites on launch #48 in the year 2016 (2016-08-05 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.TIANTONG-1 1 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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| TIANTONG-1 1 is likely not visible in the next few days. |
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41725 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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