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Track CSS (TIANHE-1) now!
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CSS (TIANHE-1) is classified as:

NORAD ID: 48274
Int'l Code: 2021-035A
Perigee: 393.1 km
Apogee: 394.9 km
Inclination: 41.5 °
Period: 92.3 minutes
Semi major axis: 6765 km
RCS: Unknown
Launch date: April 29, 2021
Source: People's Republic of China (PRC)
Launch site: Wenchang Satellite Launch Center (WSC)

TIANHE-1 is the first module to launch of the Chinese large modular space station. It was launched into orbit on 29 April 2021, as the first launch of the final phase of Tiangong program (Project 921), part of the Chinese space program.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 48274U 21035A   22147.58942909  .00025994  00000-0  31240-3 0  9990
2 48274  41.4725 344.1452 0001341  81.6048 317.3680 15.60262511 61553
Source of the keplerian elements: AFSPC