CAS500

CAS500 is a series of Earth observation satellites developed by the Korea Aerospace Research Institute.

Satellites

CAS500-1,, is a prototype class Earth observation satellite that was launched by South Korea at the Baikonur Cosmodrome on 22 March 2021. It is in a Sun-synchronous orbit, inclined by 97.7 degrees or 15 orbits/day.
CAS500-2 was expected to launch in 2022 also on a Russian rocket, but the launch was cancelled after the Russian invasion of Ukraine. The satellite was later rescheduled to launch together with CAS500-4 on a SpaceX Falcon 9 rocket.
CAS500-3 was launched on 26 November 2025 on the South Korean launch vehicle Nuri.