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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Edit Public Description
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 25298.43177446 .00038503 00000-0 45249-3 0 9994
2 48274 41.4668 310.1762 0011170 280.4087 79.5493 15.60623758256480Epoch: 2025-10-25T10:21Z
TLE epoch observation values (Epoch: 2025-10-25T10:21:45.313Z)
Latitude
0.00001°
Longitude
120.67499°
Altitude
384.091 km
Speed
7.682 km/s
True Right ascension
20h 40m 42s
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
14:02:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
395.645 km
Perigee altitude
380.53 km
Semi-major axis
6,766.224 km
Eccentricity
0.00112
Inclination
41.4668°
RAAN
310.1762°
Arg. of periapsis
280.4087°
True anomaly
79.67521°
Mean anomaly
79.5493°
Eccentric anomaly
79.61225°
Mean motion
3.89963 °/min
Orbital period
92.32 mins
BSTAR
0.00045249
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-10-26 05:02:49.738Z | 234.086° WSW | 2025-10-26 05:04:49.738Z | 166.379° S | 39.774° | 2025-10-26 05:07:49.738Z | 81.493° E |
| 5 mins | 2025-10-26 06:39:49.738Z | 278.106° WNW | 2025-10-26 06:41:49.738Z | 3.37° NNE | 42.206° | 2025-10-26 06:44:49.738Z | 79.633° E |
| 5 mins | 2025-10-26 08:16:49.738Z | 282.408° WNW | 2025-10-26 08:18:49.738Z | 128.997° SE | 44.889° | 2025-10-26 08:21:49.738Z | 104.83° ESE |
| 4 mins | 2025-10-26 09:53:49.738Z | 250.002° W | 2025-10-26 09:55:49.738Z | 195.851° SSW | 20.989° | 2025-10-26 09:57:49.738Z | 156.051° 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 ascending 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 ascending order |
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