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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CSS (TIANHE-1) details
Identifier
48274, 2021-035A
Orbit
LEO
Last TLE update8 hours ago
Origin
Flag of CNZZHGB (CN / PRC)
ManufacturerCAST
MissionOperational Civil Spaceship
Bus & MotorTIANHE, Unknown motor
Mass22,500 kg wet, ~20,838 kg dry
Launch date (UTC)
2021-04-29 (4 years ago)
Launch vehicle
CHANG ZHENG 5B
Launch site
Wenchang Satellite Launch Center (WSC)
Object type
Payload
Rocket body
Debris
Shape & HBRStep Cyl + 2 Pan, 30 m
Radar Cross Section85.800 m², Large (>1 m²)

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TLE from 8 hours ago
0 CSS (TIANHE-1)
1 48274U 21035A   25015.62789346  .00013410  00000-0  17743-3 0  9998
2 48274  41.4638 228.8314 0003994 295.9054  64.1372 15.58068183212317
Epoch: 2025-01-15T15:04Z
Definitive object data (Epoch: 2025-01-15T15:04:09.994Z)
Latitude-0.00003°
Longitude-112.52779°
Altitude391.669 km
Speed7.678 km/s
True Right ascension15h 15m 19s
True Declination0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude25.60816°
Longitude32.73541°
Altitude395.497 km
Speed7.676 km/s
Apparent Right ascension03h 35m 35s
Apparent Declination-33° 34' 23"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time00:03:34
Azimuth138.262° SSE
Elevation1.703°
Doppler factor1
Orbital elements
Apogee altitude398.185 km
Perigee altitude392.774 km
Semi-major axis6,773.617 km
Eccentricity0.0003994
Inclination41.4638°
RAAN228.8314°
Arg. of periapsis295.9054°
True anomaly64.17839°
Mean anomaly64.1372°
Eccentric anomaly64.1578°
Mean motion3.89325 °/min
BSTAR0.00017743
Orbital period92.47 mins
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Other satellites on launch #35 in the year 2021 (2021-04-29 UTC)

CSS (TIANHE-1) Visibility forecast

Observer location: undefined°, undefined

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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 mins2025-01-16 17:26:24.914Z217.833° SW2025-01-16 17:29:24.914Z136.366° SSE27.815°2025-01-16 17:31:24.914Z92.301° ESE
4 mins2025-01-16 19:04:24.914Z267.885° W2025-01-16 19:05:24.914Z282.714° WNW40.55°2025-01-16 19:08:24.914Z76.137° E
4 mins2025-01-16 20:41:24.914Z287.328° WNW2025-01-16 20:43:24.914Z56.861° ENE41.72°2025-01-16 20:45:24.914Z90.788° ESE
4 mins2025-01-16 22:18:24.914Z261.366° W2025-01-16 22:20:24.914Z183.543° SSW31.66°2025-01-16 22:22:24.914Z137.344° SSE
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