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, 38.9 m
Radar Cross Section
2905.500 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26263.92234256 .00013769 00000-0 16837-3 0 9992
2 48274 41.4679 100.7142 0002503 293.6963 66.3613 15.60143111308112Epoch: 2026-09-20T22:08Z
TLE epoch observation values (Epoch: 2026-09-20T22:08:10.397Z)
Latitude
0.00001°
Longitude
128.86131°
Altitude
386.164 km
Speed
7.681 km/s
True Right ascension
06h 42m 51s
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
19:46:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
391.17 km
Perigee altitude
387.782 km
Semi-major axis
6,767.613 km
Eccentricity
0.00025
Inclination
41.4679°
RAAN
100.7142°
Arg. of periapsis
293.6963°
True anomaly
66.38758°
Mean anomaly
66.3613°
Eccentric anomaly
66.37444°
Mean motion
3.89843 °/min
Orbital period
92.34 mins
BSTAR
0.00016837
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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 | 2026-09-21 16:47:37.583Z | 218.761° SW | 2026-09-21 16:49:37.583Z | 176.702° S | 32.698° | 2026-09-21 16:52:37.583Z | 90.316° ESE |
| 4 mins | 2026-09-21 18:25:37.583Z | 271.559° WNW | 2026-09-21 18:26:37.583Z | 302.519° NW | 67.157° | 2026-09-21 18:29:37.583Z | 76.047° E |
| 4 mins | 2026-09-21 20:02:37.583Z | 290.773° WNW | 2026-09-21 20:03:37.583Z | 322.349° NNW | 63.867° | 2026-09-21 20:06:37.583Z | 91.969° ESE |
| 4 mins | 2026-09-21 21:39:37.583Z | 251.459° W | 2026-09-21 21:40:37.583Z | 211.508° SW | 38.975° | 2026-09-21 21:43:37.583Z | 134.405° 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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