The
angular
measurement
on
the
sky
analogous
to
north-south
latitude
here
on
the
surface
of
the
Earth.
It
is
one
of
two
measurements
used
by
astronomers
to
locate
things
on
the
celestial
sphere.
Right
ascension
is
the
other.
declination
is
the
analogue
to
longitude
on
the
surface of the Earth.
declination
