Paksat-MM1 (formerly known as AsiaSat 4) was a leased communications satellite operated by SUPARCO, Pakistan's national space agency. The satellite was provided by Asia Satellite Telecommunications Company (AsiaSat), a Hong Kong-based satellite operator.
Initially stationed at 122ð East longitude, Paksat-MM1 was later relocated to 38.2ð East to better serve Pakistan and the surrounding region. During most of its operational life at 122ð East, it provided fixed satellite services, including broadcasting, audio, and data transmission, to Asia and the Pacific Ocean region.
AsiaSat 4 was built by Hughes Space and Communications, for US$220 million, which by the time of its launch had become part of Boeing Satellite Systems. It is based on the HS-601HP satellite bus. At launch, it had a mass of , and a design life of fifteen years. It carries twenty eight C-band and twenty Ku-band transponders. It was planned for late 1999, but was delayed because of the Asian crisis. Construction started in September 2000.
AsiaSat 4 was launched by an Atlas 3B SEC launch vehicle with the Centaur upper stage from Cape Canaveral Air Force Station (SLC-36B) at 00:47:01 UTC on 12 April 2003.
AsiaSat 4 was insured for launch and first year in orbit. The AsiaSat 4 was replaced by AsiaSat 9 in 2017.
In February 2018 it was leased by PakSat International, a subsidiary of SUPARCO (Pakistan's space agency), from the Asia Satellite Telecommunications Company (AsiaSat) . Previously positioned at 122ð East longitude, it was relocated to 38.2ð East to serve Pakistan's needs. Paksat renamed it Paksat-MM1 (Paksat-Multi Mission 1) and began operations in March 2018.
After the lease expired, the satellite was returned to China and relocated to 147.5ð East. As of 29 August 2024 (according to flysat.com), it is no longer operational and has been replaced by PakSat-MM1R, a new satellite launched on 30 May 2024.