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The Yohkoh Mission

Yohkoh

Click on image for larger version.

The Yohkoh Mission is a Japanese Solar mission with US and UK collaborators. It was launched into Earth orbit in August of 1991 and provided valuable data about the Sun's corona and solar flares. The satellite carried four instruments - a Soft X-ray Telescope (SXT), a Hard X-ray Telescope (HXT), a Bragg Crystal Spectrometer (BCS), and a Wide Band Spectrometer (WBS).

MSFC Solar Physics Group members Ron Moore, Jason Porter, David Falconer, and Alphonse Sterling have been involved in analyzing some of these images to determine the nature of the magnetic connections in the solar atmosphere and characteristics of flare-like activity.

Yohkoh suffered a spacecraft failure in December 2001 that has put an end to this mission. During the solar eclipse of December 14th the spacecraft lost pointing and the batteries discharged. The spacecraft operators were unable to command the satellite to point toward the sun.

Yohkoh Mission Web Links

Yohkoh Solar Observatory (Lockheed)

Yohkoh Public Outreach Project

Web Links
NOAA's Space Weather Prediction Center - Today's Space Weather Updated Every 5-minutes
NOAA's Solar Data Services - Includes Irradiance, Emissions, Sunspot Data (also Ancient), Flares, Corona, and Plage
SDO Data - Latest Images from the Solar Dynamics Observatory
National Space Weather Program - The U.S. Government and Space Weather
High-Energy Astrophysics - MSFC's Imaging X-Ray Polarimetry Explorer (IXPE)
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NASA Logo Image Author: Dr. David H. Hathaway, dave.hathaway @ comcast.net
Curator: Mitzi Adams, mitzi.adams @ nasa.gov
NASA Official: Dr. David McKenzie david.e.mckenzie @ nasa.gov
Last Updated: August 11, 2014