AsiaSat 4
NamesPaksat-MM1
Mission typeCommunications
OperatorAsiaSat (2003–2017)
PAKSAT International (2018–present)
COSPAR ID2003-014A
SATCAT no.27718
Websitehttps://www.asiasat.com
Mission duration15 years (planned)
20 years, 9 months and 2 days (in progress)
Spacecraft properties
SpacecraftAsiaSat 4
Spacecraft typeBoeing 601
BusHS-601HP
ManufacturerHughes Space and Communications
Launch mass4,137 kg (9,121 lb)
Dry mass2,500 kg (5,500 lb)
Dimensions3.4 m x 3.5 m x 5.8 m
Span: 26.2 m on orbit
Power9.6 kW
Start of mission
Launch date12 April 2003, 00:47:01 UTC
RocketAtlas 3B SEC (AC-205)
Launch siteCape Canaveral, SLC-36B
ContractorLockheed Martin
Entered serviceJune 2003
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude122° East (2003–2017)
38° East (2018–present)
Transponders
Band48 transponders:
28 C-band
20 Ku-band
Coverage areaAsia, Pacific Ocean
 

The PakSAT-1MM is a communications satellite, leased to the Space & Upper Atmosphere Research Commission, by the Hong Kong based Asia Satellite Telecommunications Company (AsiaSat). Originally known as AsiaSat 4, it was positioned in geostationary orbit at a longitude of 122° East of the Greenwich Meridian, but now moved to 38.2° East.

It spent most of its operational life at 122° East,[1] from where it was used to provide fixed satellite services, including broadcasting, audio and data transmission, to Asia and the Pacific Ocean.[2]

Satellite description

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 4,137 kg (9,121 lb),[2] and a design life of fifteen years. It carries twenty eight C-band and twenty Ku-band transponders.[2] It was planned for late 1999, but was delayed because of the Asian crisis. Construction started in September 2000.[3]

Launch

The launch of AsiaSat 4 was launched by an Atlas 3B SEC launch vehicle with a Centaur upper stage. The launch was conducted from Cape Canaveral Air Force Station (SLC-36B) at 00:47:01 UTC on 12 April 2003.[4]

AsiaSat 4 was insured for launch and first year in orbit. The AsiaSat 4 was replaced by AsiaSat 9 in 2017.[5]

Paksat-MM1

AsiaSat 4 in February 2018, was leased to PakSat International operator. It was subsequently moved to a longitude of 38.2° East, and in March 2018 it began operations for PakSat, who refer to it as Paksat-MM1 (Paksat-Multi Mission 1).[2]

See also

References

  1. "AsiaSat 4" (PDF). AsiaSat. 22 October 2015. Retrieved 5 May 2021.
  2. 1 2 3 4 Krebs, Gunter (24 March 2018). "AsiaSat 4". Gunter's Space Page. Retrieved 5 May 2021.
  3. "AsiaSat 4". The Satellite Encyclopedia. 28 February 2021. Retrieved 5 May 2021.
  4. McDowell, Jonathan (14 March 2021). "Launch Log". Jonathan's Space Page. Retrieved 5 May 2021.
  5. "AsiaSat 9". AsiaSat. Retrieved 5 May 2021.
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