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Andromeda XVIII
Andromeda
XVIII
,
discovered
in
2008
, is a
dwarf spheroidal galaxy
, which is a
satellite
of the
Andromeda Galaxy
. It is one of
the 14
known
dwarf galaxies
orbiting
M31
. It was
announced
in
2010
that the orbiting
galaxies
lie
close to a
plane
running
through M31's
center
.