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: 2 days ago
TLE from 2 days ago
0 CSS (TIANHE-1)
1 48274U 21035A 26171.43213816 .00020661 00000-0 24268-3 0 9991
2 48274 41.4693 302.2526 0007384 105.8714 254.2939 15.60937952293670Epoch: 2026-06-20T10:22Z
TLE epoch observation values (Epoch: 2026-06-20T10:22:16.737Z)
Latitude
-0.00001°
Longitude
-121.964°
Altitude
385.901 km
Speed
7.68 km/s
True Right ascension
20h 09m 00s
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
21:35:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
392.175 km
Perigee altitude
382.184 km
Semi-major axis
6,765.317 km
Eccentricity
0.00074
Inclination
41.4693°
RAAN
302.2526°
Arg. of periapsis
105.8714°
True anomaly
254.21247°
Mean anomaly
254.2939°
Eccentric anomaly
254.25318°
Mean motion
3.90042 °/min
Orbital period
92.3 mins
BSTAR
0.00024268
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 11:43:32.026Z | 221.451° SW | 2026-06-22 11:46:32.026Z | 143.26° SSE | 29.192° | 2026-06-22 11:48:32.026Z | 92.88° ESE |
| 4 mins | 2026-06-22 13:21:32.026Z | 269.832° W | 2026-06-22 13:22:32.026Z | 286.986° WNW | 40.203° | 2026-06-22 13:25:32.026Z | 76.12° E |
| 4 mins | 2026-06-22 14:58:32.026Z | 288.506° WNW | 2026-06-22 14:59:32.026Z | 309.356° NW | 40.469° | 2026-06-22 15:02:32.026Z | 92.612° ESE |
| 4 mins | 2026-06-22 16:35:32.026Z | 251.842° W | 2026-06-22 16:36:32.026Z | 214.381° SW | 30.699° | 2026-06-22 16:39:32.026Z | 135.823° SSE |
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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