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- Spacecraft Brief Description -
The Japanese Marine Observation Satellite-1b (MOS-1b) was the second
Earth resources satellite in the MOS series to be launched by NASDA to
monitor atmospheric water ... vapor, ocean currents, sea surface
temperature, ice floe dynamics, chlorophyll concentration in the
oceans, and vegetation and agricultural land applications. The MOS-1b
carried the same three sensors as the MOS-1a: a Multi-spectrum
Electronic Self-Scanning Radiometer (MESSR), a Visible and Thermal
Infrared Radiometer (VTIR), and a Microwave Scanning Radiometer
(MSR). Data was transmitted real-time to the Hatoyama Earth
Observation Center for processing and is available through the Data
Service Department, Remote Sensing Technology Center of Japan
(RESTEC). The satellite also included a Data Collection System (DCS)
Transponder designed to be a forerunner of the Japanese TDRSS, used to
collect and relay information from surface Data Collection Platforms
(DCPs) and locate DCPs based on the Doppler frequency of received
signals. The satellite is a 1.26 x 1.48 x 2.4 meter high box-shape of
aluminium honeycomb construction with a single solar array of three
1.51 meter wide panels. The satellite is controlled in three axes by
momentum wheels and four IN hydrazine thrusters. Other MOS satellites
are planned throughout the 1990's.

- Auxiliary Information -
Launch Date and Time : 1990-02-07
Epoch Date and Time :
Apogee (km or AU): 940.
Perigee (km or AU): 909.
Inclination (degree) : 99.
Orbit Type : Geocentric
Information last updated on 1992-06-09

http://www.jaxa.jp/projects/sat/mos1/index_e.html
http://nasascience.nasa.gov/missions/mos