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Marine Observation Satellite
MOS-1b
MOS-1b
Credit: Manufacturer Image
Japanese earth sea satellite. The MOS 1A and 1B satellites, also known as Momo 1A and 1B, were Japan's first Earth resources satellites.

AKA: Momo;MOS. Status: Operational 1987. First Launch: 1987-02-19. Last Launch: 1990-02-07. Number: 2 . Gross mass: 742 kg (1,635 lb). Height: 2.40 m (7.80 ft). Span: 11.50 m (37.70 ft).

The satellites were designed to monitor ocean currents, sea surface temperature, atmospheric water vapor, ocean chlorophyll levels, precipitation, and land vegetation. They also acted as relays for data from remote surface sensor platforms.

MOS 1B was upgraded for flight from the engineering model for MOS 1A. The spacecraft was nadir pointing, 3-axis stabilized with momentum wheels and hydrazine thrusters. Communications consisted of S-, X-band downlink, and S-band uplink. A single solar panel with 1-axis articulation provided power. The payload included:


More at: MOS.

Family: Earth, Earth seasat, Sun synchronous orbit. Country: Japan. Launch Vehicles: Thor, Delta, N-2, H-1. Launch Sites: Tanegashima, Tanegashima N. Agency: NASDA, NEC. Bibliography: 2, 279, 6, 12791.

1987 February 19 - . 01:23 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-2.
1990 February 7 - . 01:33 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: H-1.

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