CSS (TIANHE-1), 48274
Orbit data source: Space-Track
The Chinese Space Station (CSS), known as Tiangong or "Heavenly Palace," is China's independently developed space station that represents a significant step in China’s space exploration capabilities. Launched in phases starting with the Tianhe module in 2021, the station operates in low Earth orbit (LEO). It aims to support a variety of scientific experiments in fields such as space medicine, astronomy, and technology development.
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48274 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Civil Spaceship
Bus & Motor
TIANHE, Unknown motor
Mass
22,500 kg wet, ~20,838 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Irr, 27.5 m
Radar Cross Section
2905.500 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26083.49395739 .00019397 00000-0 22400-3 0 9994
2 48274 41.4663 118.0307 0004758 10.7895 349.3045 15.61427580279921Epoch: 2026-03-24T11:51Z
TLE epoch observation values (Epoch: 2026-03-24T11:51:17.918Z)
Latitude
-0.00004°
Longitude
118.23518°
Altitude
379.971 km
Speed
7.686 km/s
True Right ascension
07h 52m 07s
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
01:26:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
388.985 km
Perigee altitude
382.548 km
Semi-major axis
6,763.904 km
Eccentricity
0.00048
Inclination
41.4663°
RAAN
118.0307°
Arg. of periapsis
10.7895°
True anomaly
349.29438°
Mean anomaly
349.3045°
Eccentric anomaly
349.29944°
Mean motion
3.90164 °/min
Orbital period
92.27 mins
BSTAR
0.000224
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Other satellites on launch #35 in the year 2021 (2021-04-29 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.CSS (TIANHE-1) Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-03-25 06:32:54.240Z | 234.41° WSW | 2026-03-25 06:33:54.240Z | 203.831° SW | 39.712° | 2026-03-25 06:36:54.240Z | 81.06° E |
| 4 mins | 2026-03-25 08:09:54.240Z | 287.166° WNW | 2026-03-25 08:10:54.240Z | 329.216° NNW | 40.981° | 2026-03-25 08:13:54.240Z | 80.077° E |
| 4 mins | 2026-03-25 09:46:54.240Z | 277.595° WNW | 2026-03-25 09:47:54.240Z | 237.644° WSW | 44.23° | 2026-03-25 09:50:54.240Z | 108.74° 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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