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H-ii adeos.gif
Launch of ADEOS I aboard an H-II rocket
NamesAdvanced Earth Observing Satellite
Mission typeEarth observation
Environmental monitoring
COSPAR ID1996-046A
SATCAT no.24277
Mission durationFinal: 10 months, 13 days
Spacecraft properties
Launch mass3,500 kg (7,700 lb)
Dimensions4 × 4 × 5 m (13 × 13 × 16 ft)
Power5,000 watts
Start of mission
Launch date17 August 1996, 01:53:00 (1996-08-17UTC01:53) UTC[1]
Launch siteTanegashima Yoshinobu 1
End of mission
DisposalSpacecraft failure
Last contact30 June 1997, 07:21 (1997-06-30UTC07:22) UTC
Orbital parameters
Reference systemGeocentric
Perigee altitude792 km (492 mi)
Apogee altitude795 km (494 mi)
Inclination98.7 degrees
Period101 minutes
Mean motion14.29 rev/day
Epoch26 December 2016, 19:33:18 UTC[3]

ADEOS I (Advanced Earth Observing Satellite 1) was an Earth observation satellite[4] launched by NASDA in 1996.[5][6] The mission's Japanese name, Midori, means "green".[7]

The mission ended in July 1997 after the satellite sustained structural damage to the solar panel array.[5] Its successor, ADEOS II, was launched in 2002. Like the first mission, it ended after less than a year[7] – also following solar panel malfunctions.[8]


ADEOS I satellite
ADEOS I satellite

ADEOS was designed to observe Earth's environmental changes, focusing on global warming, depletion of the ozone layer, and deforestation.[7]

On board the satellite are eight instruments developed by NASDA, NASA, and CNES. The Ocean Color and Temperature Scanner (OCTS) is a whisk broom radiometer developed by NASDA.[4] The Advanced Visible and Near Infrared Radiometer (AVNIR), an optoelectronic scanning radiometer with CCD detectors, was also produced by NASDA.[4] The NASA Scatterometer (NSCAT), developed with the Jet Propulsion Laboratory, used fan-beam Doppler signals to measure wind speeds over bodies of water.[4] The Total Ozone Mapping Spectrometer (TOMS) was built by CNES to study changes to Earth's ozone layer.[4] The Polarization and Directionality of the Earth's Reflectance (POLDER) device was also developed by CNES, and was also launched on ADEOS II.[4] The Improved Limb Atmospheric Spectrometer (ILAS) was developed by NASDA and the Environment Agency of Japan, and used grating spectrometers to measure the properties of trace gases using solar occultation.[4] The Retroreflector in Space (RIS) and Interferometric Monitor for Greenhouse Gases (IMG) were both developed by Japan, and studied atmospheric trace gases and greenhouse gases respectively.[4]



On 28 August 1996, the satellite adjusted its attitude to control its orbit. As a result of this maneuver, the solar panel received sunlight from the rear. This caused the solar paddle mast to expand and the panel blanket to contract, placing tension on a soldered joint on the paddle, which eventually broke.[5]

The final communication from the satellite was received at 07:21 UTC on 30 June 1997,[5] 9 months after launch.[7]


  1. ^ Earth Observation Research and Application Center (2005)
  2. ^ Earth Observation Research and Application Center (1998)
  3. ^ "ADEOS I - Orbit". Heavens Above. 27 December 2016. Retrieved 28 December 2016.
  4. ^ a b c d e f g h Earth Observation Portal (2008)
  5. ^ a b c d Satellite News Digest (2006)
  6. ^ International Laser Ranging Service (2010)
  7. ^ a b c d Darling (2010)
  8. ^ Satellite News Digest (2003)


This page was last edited on 31 January 2021, at 05:26
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