The ASCA Mission
ASCA (formerly named Astro-D) was Japan's fourth cosmic X-ray
astronomy mission, and the second for which the United States provided part of
the scientific payload. The satellite was successfully launched on
February 20, 1993. The mission operated successfully for
over 7 years until attitude control was lost on
July 14, 2000 during a geomagnetic storm, after which no
scientific observations were performed. ASCA reentered the atmosphere
on March 2, 2001 after more than 8 years in orbit.
The U.S. ASCA Guest Observer Facility (GOF), located at NASA's Goddard
Space Flight Center in Greenbelt, Maryland, was part of the then Office
of General Investigator Programs
(OGIP) (now called the
HEASARC Office) in the Astrophysics Science Division
The primary responsibility of the U.S. ASCA GOF was to enable U.S.
astronomers to make the best use of the ASCA mission, in close
collaboration with the Japanese ASCA team.
This page is intended for members of the scientific community.
For members of the general public, or those interested in general
astronomy/astrophysics information please go to our
Education and Public Outreach site
or the ASCA results for the
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