Koreasat 5 is South Korea's first combined civil and military communications satellite. The military part of the satellite is known as Anasis 1.

Alcatel Space supplied both the multimission satellite and its ground control system, along with launch and early operations phase (LEOP) support. Based on the new-generation Spacebus-4000C1 platform from Alcatel Space, Koreasat 5 features a state-of-the-art broadband payload, including new technologies developed within the scope of the Syracuse III program.

With 36 transponders in Ku-band, C-band (civil) and SHF band (military), Koreasat 5 delivers advanced broadband multimedia and digital television transmission services, along with conventional telecom services to operators in the Asia-Pacific region.

Koreasat 5 suffered a failure of a solar-array drive mechanism that crippled its capacity and resulted in an insurance claim in 2013.