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Williams (Martian crater)
Williams
is an
impact crater
on
Mars
, located in the
Memnonia quadrangle
at
18
.7°S
latitude
and
164
.3°W
longitude
. It
measures
123
.2
kilometers
in
diameter
and was named after
British
astronomer
Arthur
S. Williams. The name was
approved
by IAU's
Working Group for Planetary System Nomenclature
in
1973
.