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: 17 hours ago
TLE from 17 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26083.87771812 .00019459 00000-0 22458-3 0 9998
2 48274 41.4665 115.6921 0004565 13.6781 346.4181 15.61442402279985Epoch: 2026-03-24T21:03Z
TLE epoch observation values (Epoch: 2026-03-24T21:03:54.845Z)
Latitude
-0.00002°
Longitude
-22.63551°
Altitude
380.089 km
Speed
7.685 km/s
True Right ascension
07h 42m 46s
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
18:51:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
388.812 km
Perigee altitude
382.636 km
Semi-major axis
6,763.861 km
Eccentricity
0.00046
Inclination
41.4665°
RAAN
115.6921°
Arg. of periapsis
13.6781°
True anomaly
346.40581°
Mean anomaly
346.4181°
Eccentric anomaly
346.41196°
Mean motion
3.90168 °/min
Orbital period
92.27 mins
BSTAR
0.00022458
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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 | 2026-03-26 05:32:01.468Z | 222.302° SW | 2026-03-26 05:34:01.468Z | 171.118° S | 31.945° | 2026-03-26 05:37:01.468Z | 86.628° E |
| 5 mins | 2026-03-26 07:09:01.468Z | 270.756° WNW | 2026-03-26 07:11:01.468Z | 351.875° N | 43.359° | 2026-03-26 07:14:01.468Z | 77.465° E |
| 5 mins | 2026-03-26 08:46:01.468Z | 285.291° WNW | 2026-03-26 08:48:01.468Z | 27.289° NE | 44.182° | 2026-03-26 08:51:01.468Z | 96.561° ESE |
| 4 mins | 2026-03-26 10:23:01.468Z | 257.346° W | 2026-03-26 10:25:01.468Z | 189.325° SSW | 27.365° | 2026-03-26 10:27:01.468Z | 144.233° 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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