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: 15 hours ago
TLE from 15 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26037.47343961 .00022506 00000-0 28124-3 0 9996
2 48274 41.4680 37.9008 0005397 13.3696 346.7284 15.59287012272734Epoch: 2026-02-06T11:21Z
TLE epoch observation values (Epoch: 2026-02-06T11:21:45.182Z)
Latitude
-0.00004°
Longitude
90.85168°
Altitude
385.765 km
Speed
7.683 km/s
True Right ascension
02h 31m 36s
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
04:03:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
395.605 km
Perigee altitude
388.297 km
Semi-major axis
6,770.088 km
Eccentricity
0.00054
Inclination
41.468°
RAAN
37.9008°
Arg. of periapsis
13.3696°
True anomaly
346.71419°
Mean anomaly
346.7284°
Eccentric anomaly
346.7213°
Mean motion
3.89629 °/min
Orbital period
92.4 mins
BSTAR
0.00028124
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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 | 2026-02-07 02:56:12.298Z | 193.501° SSW | 2026-02-07 02:58:12.298Z | 150.015° SSE | 18.417° | 2026-02-07 03:00:12.298Z | 105.693° ESE |
| 4 mins | 2026-02-07 04:33:12.298Z | 248.603° W | 2026-02-07 04:35:12.298Z | 102.723° ESE | 42.842° | 2026-02-07 04:37:12.298Z | 78.957° E |
| 4 mins | 2026-02-07 06:10:12.298Z | 285.156° WNW | 2026-02-07 06:12:12.298Z | 34.126° NE | 40.792° | 2026-02-07 06:14:12.298Z | 81.213° E |
| 4 mins | 2026-02-07 07:47:12.298Z | 274.748° WNW | 2026-02-07 07:49:12.298Z | 163.984° S | 41.048° | 2026-02-07 07:51:12.298Z | 118.726° SE |
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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