ADEOS I
Launch of ADEOS I aboard an H-II rocket
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| Names | Advanced Earth Observing Satellite Midori |
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| Mission type | Earth observation Environmental monitoring |
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| Operator | NASDA | ||||||||||||||||||
| COSPAR ID | 1996-046A | ||||||||||||||||||
| SATCAT no. | 24277 | ||||||||||||||||||
| Mission duration | Final: 10 months, 13 days | ||||||||||||||||||
| Spacecraft properties | |||||||||||||||||||
| Launch mass | 3,500 kg (7,700 lb) | ||||||||||||||||||
| Dimensions | 4 × 4 × 5 m (13 × 13 × 16 ft) | ||||||||||||||||||
| Power | 5,000 watts | ||||||||||||||||||
| Start of mission | |||||||||||||||||||
| Launch date | 17 August 1996, 01:53:00 UTC | ||||||||||||||||||
| Rocket | H-II | ||||||||||||||||||
| Launch site | Tanegashima Yoshinobu 1 | ||||||||||||||||||
| End of mission | |||||||||||||||||||
| Disposal | Spacecraft failure | ||||||||||||||||||
| Last contact | 30 June 1997, 07:21 UTC | ||||||||||||||||||
| Orbital parameters | |||||||||||||||||||
| Reference system | Geocentric | ||||||||||||||||||
| Regime | Sun-synchronous | ||||||||||||||||||
| Eccentricity | 0.0002193 | ||||||||||||||||||
| Perigee | 792 km (492 mi) | ||||||||||||||||||
| Apogee | 795 km (494 mi) | ||||||||||||||||||
| Inclination | 98.7 degrees | ||||||||||||||||||
| Period | 101 minutes | ||||||||||||||||||
| Mean motion | 14.29 rev/day | ||||||||||||||||||
| Epoch | 26 December 2016, 19:33:18 UTC | ||||||||||||||||||
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| Instruments | |
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| OCTS | Ocean Color and Temperature Scanner |
| AVNIR | Advanced Visible and Near-Infrared Radiometer |
| NSCAT | NASA Scatterometer |
| TOMS | Total Ozone Mapping Spectrometer |
| POLDER | Polarization and Directionality of Earth's Reflectances |
| IMG | Interferometric Monitor for Greenhouse Gases |
| ILAS | Improved Limb Atmospheric Spectrometer |
| RIS | Retroreflector in Space |
ADEOS I (Advanced Earth Observing Satellite 1) was an Earth observation satellite launched by NASDA in 1996. The mission's Japanese name, Midori, means "green".
The mission ended in July 1997 after the satellite sustained structural damage to the solar panel array. Its successor, ADEOS II, was launched in 2002. Like the first mission, it ended after less than a year – also following solar panel malfunctions.
ADEOS was designed to observe Earth's environmental changes, focusing on global warming, depletion of the ozone layer, and deforestation.
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. The Advanced Visible and Near Infrared Radiometer (AVNIR), an optoelectronic scanning radiometer with CCD detectors, was also produced by NASDA. The NASA Scatterometer (NSCAT), developed with the Jet Propulsion Laboratory, used fan-beam Doppler signals to measure wind speeds over bodies of water. The Total Ozone Mapping Spectrometer (TOMS) was built by CNES to study changes to Earth's ozone layer. The Polarization and Directionality of the Earth's Reflectance (POLDER) device was also developed by CNES, and was also launched on ADEOS II. 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. 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.
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