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MOS-1 (satellite)

From Wikipedia, the free encyclopedia

Marine Observation Satellite-1
NamesMOS-1, Momo-1
Mission typeEarth observation
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
End of mission
Deactivated29 November 1995
Orbital parameters
Reference systemGeocentric
Perigee altitude909 km [5]
Apogee altitude909 km
Period103.2 minutes

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.


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]


  1. ^ Ninomiya, Keiken (2005). Nebylov, Alexander (ed.). Automatic Control in Aerospace 2004. Proceedings of the 16th IFAC Symposium, Volume 1. Elsevier. p. 199. ISBN 0-08-044013-4.
  2. ^ - 24 January 2020
  3. ^ - 24 January 2020
  4. ^
  5. ^ - 24 January 2020
  6. ^ - 24 January 2020
  7. ^ - 24 January 2020

External links

This page was last edited on 27 June 2020, at 08:53
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