Track CSS (TIANHE-1) now! 10-day predictions CSS (TIANHE-1) is classified as: Chinese Space Station Amateur radio NORAD ID: 48274 Int'l Code: 2021-035A Perigee: 383.3 km Apogee: 385.1 km Inclination: 41.5 ° Period: 92.1 minutes Semi major axis: 6755 km RCS: Unknown Launch date: April 29, 2021 Source: People's Republic of China (PRC) Launch site: Wenchang Satellite Launch Center (WSC) Uplink (MHz):