TIANLIAN-3 01, 100172
Orbit data source: Space-Track
TIANLIAN-3 01, 100172 is a payload satellite owned by CAST (CN) in HEO that was launched on Wed, 29 Jul 2026 UTC launched 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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100172 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational spacecraft
Bus & Motor
DFH-4E, FY-25
Mass
~6,000 kg wet, ~3,000 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
BOX + 2 PAN + DISH, 1.1 m
Radar Cross Section
RCS unknown
Expand to show TLE details & historyLast TLE update: 2 weeks ago
TLE from 2 weeks ago
0 TIANLIAN-3 01
1 A0172U 26172A 26210.73258231 .00007279 00000-0 10443-2 0 9999
2 A0172 15.4420 145.4634 7295286 179.7295 181.2239 2.28006376 26Epoch: 2026-07-29T17:34Z
TLE epoch observation values (Epoch: 2026-07-29T17:34:55.111Z)
Latitude
0.00011°
Longitude
-65.68096°
Altitude
35,809.04 km
Speed
1.597 km/s
True Right ascension
09h 41m 43s
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
12:53:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,803.334 km
Perigee altitude
218.39 km
Semi-major axis
24,388.999 km
Eccentricity
0.72953
Inclination
15.442°
RAAN
145.4634°
Arg. of periapsis
179.7295°
True anomaly
180.27985°
Mean anomaly
181.2239°
Eccentric anomaly
180.70766°
Mean motion
0.56984 °/min
Orbital period
631.76 mins
BSTAR
0.0010443
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Other satellites on launch #172 in the year 2026 (2026-07-29 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.TIANLIAN-3 01 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. |
|---|---|---|---|---|---|---|---|
| 150 mins | 2026-08-15 22:16:58.476Z | 217.443° SW | 2026-08-16 00:18:58.476Z | 198.51° SSW | 37.395° | 2026-08-16 00:46:58.476Z | 129.836° SE |
| 472 mins | 2026-08-16 13:43:58.476Z | 116.343° SE | 2026-08-16 20:07:58.476Z | 141.628° SSE | 36.383° | 2026-08-16 21:35:58.476Z | 104.926° ESE |
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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