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: 12 hours ago
TLE from 12 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26034.52706412 .00018163 00000-0 22908-3 0 9991
2 48274 41.4674 55.7893 0006165 350.4992 9.5728 15.59144861272275Epoch: 2026-02-03T12:38Z
TLE epoch observation values (Epoch: 2026-02-03T12:38:58.339Z)
Latitude
-0.00009°
Longitude
92.3394°
Altitude
385.617 km
Speed
7.683 km/s
True Right ascension
03h 43m 09s
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
02:38:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
396.536 km
Perigee altitude
388.188 km
Semi-major axis
6,770.499 km
Eccentricity
0.00062
Inclination
41.4674°
RAAN
55.7893°
Arg. of periapsis
350.4992°
True anomaly
9.58456°
Mean anomaly
9.5728°
Eccentric anomaly
9.57868°
Mean motion
3.89594 °/min
Orbital period
92.4 mins
BSTAR
0.00022908
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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 | 2026-02-04 05:49:53.869Z | 246.137° WSW | 2026-02-04 05:51:53.869Z | 168.88° S | 43.875° | 2026-02-04 05:54:53.869Z | 78.701° E |
| 5 mins | 2026-02-04 07:26:53.869Z | 281.946° WNW | 2026-02-04 07:28:53.869Z | 352.881° N | 41.814° | 2026-02-04 07:31:53.869Z | 82.575° E |
| 5 mins | 2026-02-04 09:03:53.869Z | 278.373° WNW | 2026-02-04 09:05:53.869Z | 211.846° SW | 43.166° | 2026-02-04 09:08:53.869Z | 113.865° 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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