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: 9 hours ago
TLE from 9 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A 26307.75607771 .00012739 00000-0 14906-3 0 9999
2 48274 41.4683 194.0006 0004354 254.9060 105.1297 15.61346436314962Epoch: 2026-11-03T18:08Z
TLE epoch observation values (Epoch: 2026-11-03T18:08:45.114Z)
Latitude
-0.00003°
Longitude
-121.20159°
Altitude
384.136 km
Speed
7.681 km/s
True Right ascension
12h 56m 00s
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
22:51:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
388.946 km
Perigee altitude
383.055 km
Semi-major axis
6,764.138 km
Eccentricity
0.00044
Inclination
41.4683°
RAAN
194.0006°
Arg. of periapsis
254.906°
True anomaly
105.17786°
Mean anomaly
105.1297°
Eccentric anomaly
105.15378°
Mean motion
3.90144 °/min
Orbital period
92.27 mins
BSTAR
0.00014906
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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 | 2026-11-04 20:29:54.815Z | 230.565° WSW | 2026-11-04 20:31:54.815Z | 143.735° SSE | 53.656° | 2026-11-04 20:33:54.815Z | 85.487° E |
| 4 mins | 2026-11-04 22:06:54.815Z | 279.954° WNW | 2026-11-04 22:08:54.815Z | 35.099° NE | 58.323° | 2026-11-04 22:10:54.815Z | 76.294° E |
| 4 mins | 2026-11-04 23:43:54.815Z | 283.991° WNW | 2026-11-04 23:45:54.815Z | 98.606° ESE | 65.311° | 2026-11-04 23:47:54.815Z | 102.723° ESE |
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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