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 26218.51587176 .00011813 00000-0 15232-3 0 9995
2 48274 41.4697 16.4750 0001032 270.3877 89.6843 15.58852378301027Epoch: 2026-08-06T12:22Z
TLE epoch observation values (Epoch: 2026-08-06T12:22:51.320Z)
Latitude
0.00001°
Longitude
-124.29363°
Altitude
390.573 km
Speed
7.678 km/s
True Right ascension
01h 05m 54s
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
10:50:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
393.907 km
Perigee altitude
392.51 km
Semi-major axis
6,771.345 km
Eccentricity
0.0001
Inclination
41.4697°
RAAN
16.475°
Arg. of periapsis
270.3877°
True anomaly
89.69613°
Mean anomaly
89.6843°
Eccentric anomaly
89.69021°
Mean motion
3.89521 °/min
Orbital period
92.42 mins
BSTAR
0.00015232
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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
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-07 14:47:15.699Z | 239.869° WSW | 2026-08-07 14:49:15.699Z | 139.887° SSE | 42.116° | 2026-08-07 14:51:15.699Z | 82.365° E |
| 5 mins | 2026-08-07 16:24:15.699Z | 281.411° WNW | 2026-08-07 16:26:15.699Z | 14.88° NNE | 41.684° | 2026-08-07 16:29:15.699Z | 81.519° E |
| 5 mins | 2026-08-07 18:01:15.699Z | 280.001° WNW | 2026-08-07 18:03:15.699Z | 177.709° S | 44.32° | 2026-08-07 18:06:15.699Z | 109.674° 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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