KSAT-2, also known as Hayato-2 was a Japanese satellite constructed by Kagoshima University as a reflight of its KSAT mission. It has a size of 10 x 10 x 10 cm (without extendible antenna boom) and is built around a standard 1U CubeSatsatellite bus. The primary satellite payload is a radio-frequency water vapor detector for climatology research.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).