CAS500

CAS500-1, or Compact Advanced Satellite 500-1 (국토위성 1호, ), is a prototype 500 kg class Earth observation satellite that was launched by South Korea at the Baikonur Cosmodrome on 22 March 2021. It is in a 500 km Sun-synchronous orbit, inclined by 97.7 degrees or 15 orbits/day.