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Himawari 8, 9

Himawari 8 [MELCO]

The Japanese Ministry of Transport Civil Aviation Bureau & Meteorological Agency ordered in 2009 two replacement geostationary meteorological satellites, Himawari-8 and -9, from MELCO.

These satellites are to replace MTSat-1R (Himawari-6) and MTSAT-2 (Himawari-7). The two satellites are designed to remain in service for 15 years or more.

Main instrument of the satellites is AHI (Advanced Himawari Imager). It is comparable to the Advanced Baseline Imager (ABI) on board of the U.S. GOES-R class satellites. AHI is a multi-purpose imager for weather watch, NWP utilization and environment monitoring; and wind derivation by tracking clouds and water vapor features. It features 16 channels operating in the VIS, NIR, SWIR, MWIR and TIR spectral bands (~0.43 - ~13.4 m). It has a spatial resolution of 0.5 km to 2 km, depending on spectral band. The coverage cycle is 10 minutes for full disk.

Also on board is SEDA (Space Environment Data Acquisition Monitor) to measure the radiation to which the satellites are exposed in their geostationary Earth orbits. It measures protons in the 15 MeV to 100  MeV range and electrons in 0.2 MeV to ~5 MeV range.

The DCS (Data Collection Subsystem) supports the collection of surface-based observation data obtained by ground segments similar as in the earlier MTSAT series. DCS relays data from the ground through a UHF transponder, which emits a Ka-band signal.

Nation: Japan
Type / Application: Communication, Meteorology
Operator: Japanese Ministry of Transport Civil Aviation Bureau & Meteorological Agency
Contractors: Mitsubishi Electric (prime), Boeing
Equipment: AHI, SEDA, DCS
Configuration: DS-2000
Propulsion: ?
Power: Deployable solar array, batteries
Lifetime: 15 years (meteorological mission 8 years)
Mass: ~3500 kg; 1300 kg (dry)
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
Himawari 8 2014-060A 07.10.2014 Ta YLP-1 H-2A-202
Himawari 9 2016-064A 02.11.2016 Ta YLP-1 H-2A-202
Further GMS / MTSat (Himawari) missions: