Advanced Land Observing Satellite

Advanced Land Observing Satellite
ALOS model
NamesDaichi
ALOS
Mission typeEarth observation
OperatorJapan Aerospace Exploration Agency (JAXA)
COSPAR ID2006-002A
SATCAT no.28931
Websitehttps://global.jaxa.jp/projects/sat/alos/index.html
Mission duration5 years (planned);
5 years, 3 months, 18 days (achieved)
Spacecraft properties
SpacecraftALOS
ManufacturerNEC
Toshiba
Mitsubishi Electric
Launch mass3,810 kg (8,400 lb)
Dimensions8.9 m × 27.4 m × 6.2 m (29 ft × 90 ft × 20 ft)
Power7 kW
Start of mission
Launch date24 January 2006, 01:33 UTC
RocketH-IIA-2022 (No. 8)
Launch siteTanegashima Space Center
ContractorMitsubishi
End of mission
DisposalDecommissioned
Deactivated12 May 2011, 10:50 UTC
Orbital parameters
Reference systemGeocentric orbit
RegimeSun-synchronous orbit
Perigee altitude694 km (431 mi)
Apogee altitude696 km (432 mi)
Inclination98.0°
Period98.5 minutes
Instruments
PRISM: Panchromatic Remote-sensing Instruments for Stereo Mapping, to measure precise land elevation
AVNIR-2: Advanced Visible and Near Infrared Radiometer type 2, which observes what covers land surfaces. 10-meter resolution at nadir
PALSAR: Phased Array type L-band Synthetic Aperture Radar, which enables day-and-night and all-weather land observation
ALOS Series

Advanced Land Observing Satellite (ALOS), also called Daichi (a Japanese word meaning "land"), was a 3810 kg Japanese satellite launched in 2006. After five years of service, the satellite lost power and ceased communication with Earth, but remains in orbit.