MOS-1 (satellite)

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 (NASDA). It is in a polar orbit at roughly 900 km altitude, but has been decommissioned on 29 November 1995.

Marine Observation Satellite-1
NamesMOS-1, Momo-1
Mission typeEarth observation
OperatorNASDA
COSPAR ID1987-018A
SATCAT no.17527
Mission durationPlanned: 2 years
Final: 8 years, 9 months, 9 days
Spacecraft properties
ManufacturerNEC [1]
Launch mass750 kg [2]
Start of mission
Launch date19 February 1987
01:23:00 UTC [3]
RocketN-II (N-16F) [4]
Launch siteTanegashima LC-N
ContractorNASDA
End of mission
DisposalDecommissioned
Deactivated29 November 1995
Orbital parameters
Reference systemGeocentric
RegimeSun-synchronous
Perigee altitude909 km [5]
Apogee altitude909 km
Inclination99.1°
Period103.2 minutes
 

Instruments

It has four instruments:

  • "Multi-Spectral Electronic Self-Scanning Radiometer (MESSR)" which offers 50 m 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 infrared bands over a 1,500 km swathe.
  • "Micro Scanning Radiometer (MSR)" which measures microwave emission in the 23 GHz and 31 GHz bands.
  • "Data Collection System (DCS)" which is an experimental transponder.[7]

References

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