MOS-1 (satellite)
| Names | MOS-1, Momo-1 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mission type | Earth observation | ||||||||
| Operator | NASDA | ||||||||
| COSPAR ID | 1987-018A | ||||||||
| SATCAT no. | 17527 | ||||||||
| Mission duration | Planned: 2 years Final: 8 years, 9 months, 9 days |
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| Spacecraft properties | |||||||||
| Manufacturer | NEC | ||||||||
| Launch mass | 750 kg (1,650 lb) | ||||||||
| Start of mission | |||||||||
| Launch date | 19 February 1987, 01:23 UTC | ||||||||
| Rocket | N-II N-16 | ||||||||
| Launch site | Tanegashima LC-N | ||||||||
| Contractor | NASDA | ||||||||
| End of mission | |||||||||
| Disposal | Decommissioned | ||||||||
| Deactivated | 29 November 1995 | ||||||||
| Orbital parameters | |||||||||
| Reference system | Geocentric | ||||||||
| Regime | Sun-synchronous | ||||||||
| Perigee | 909 km (565 mi) | ||||||||
| Apogee | 909 km (565 mi) | ||||||||
| Inclination | 99.1° | ||||||||
| Period | 103.2 minutes | ||||||||
| Epoch | 18 February 1987, 19:00:00 UTC | ||||||||
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| Instruments | |
|---|---|
| MESSR | Multispectral Electronic Self-Scanning Radiometer |
| VTIR | Visible and Thermal Infrared Radiometer |
| MSR | Microwave Scanning Radiometer |
Marine Observation Satellite 1 (MOS-1), also known as Momo-1, was Japan's first Earth observation satellite. It was launched on 19 February 1987 on a N-II rocket from Tanegashima Space Center and was operated by the National Space Development Agency of Japan.
It has three instruments: "Multi-Spectral Electronic Self-Scanning Radiometer (MESSR)" which offers 50m resolution in two visible and two infra-red spectral bands over two 100 km swathes; "Visible and Thermal Infrared Radiometer (VTIR)" which has a much lower resolution in one visible and three IR bands over a 1500 km swathe; "Micro Scanning Radiometer (MSR)" which measures microwave emission in the 23 GHz and 31 GHz bands.
Its NORAD ID is 17527; it is in a polar orbit at roughly 900 km altitude, but has not been active since November 1995.
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