MOS-1B

Japan


International Sat. n°:

Japanese satellite n°: 55

Marine Observation Satellite. Also called MOMO-1B

Launch data:

Designation 20478 / 90013A
Launch date07 Feb 1990 - 01:33 UT
Launch siteTanegashima
Launch vehicle: H1 (#H-21)
MissionEarth observation, Remote sensing
Earth orbit on:
Perigee/Apogee 911 / 920 km
Inclination 99.08°
Period 103.2 min


Specifications:

Prime contractor NEC
Mass at launch 740 kg
Dimension 1.26 x 1.48 x 2.4 m
Solar array asymmetric, 2 x 5.3 m
Stabilization 3-axis
Design lifetime 2 years

End of life

Out of service 19 May 1996


Payloads:


MESSR (Multispectral Electronic Self-Scanning Radiometer)

Wavebands 0.51-0.59 µm (visible): water body mapping
0.61-0.69 µm (visible): vegetation differentiation
0.72-0.80 µm (near IR): imaging through haze
0.80-1.10 µm (near IR): land/water separation
Resolution 50 m
Swath width 100 km

VTIR (Visible and Thermal IR Radiometer)

Wavebands 0.50-0.70 µm (visible): snow. ice and cloud
6-7 µm (water vapor band): upper atmosphere water vapor, cirrus
10.5-11.5 µm (thermal IR): ocean currents. sea surface temperature, snow
10.5-12.5 µm (thermal IR): ocean currents. sea surface temperature, snow
Resolution visible: 0.9 km; others: 2.7 km
Swath width 1500 km

MSR (Microwave Scanning Radiometer)

Wavebands 23.8 +/- 0.2 GHz: water vapor, rain and snowfall
31.4 +/- 0.25 GHz: ice, cloud, snowfall
Resolution 32 km in 23 GHz and 23 in 31 GHz
Swath width 317 km

Downlink frequency: 136.12 & 2220 MHz


01 Jan 1990: MOS-1b after attaching to the rocket in the service tower, with the DEBUT satellite on his site. - Credit: JAXA




01 Jan 1990: MOS-1b fairing is attached - Credit: JAXA


Ref: #15, #102, #235 - update: 08.09.10