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Cancri

Cancri is the Latin genitive form of Cancer, used in astronomy to designate objects located in the zodiacal constellation Cancer. In star and exoplanet nomenclature, the suffix Cancri indicates that the object lies in Cancer, for example 55 Cancri.

55 Cancri is a bright, nearby star in Cancer. It is catalogued as HD 75732 and HIP

Beyond 55 Cancri, the use of Cancri appears in other stars within Cancer, including R Cancri and

43587.
It
lies
about
40
light-years
from
Earth
and
is
visible
to
the
naked
eye
under
favorable
conditions.
The
star
is
a
late-type
G
dwarf
with
higher
metallicity
than
the
Sun.
55
Cancri
hosts
a
multiple-planet
system
with
at
least
five
confirmed
exoplanets,
designated
55
Cancri
b,
c,
d,
e,
and
f.
One
planet,
55
Cancri
e,
is
a
compact,
rocky
super-Earth
in
a
very
short
orbit,
and
the
system
has
been
the
subject
of
substantial
exoplanet
research
since
the
early
days
of
precision
radial-velocity
measurements.
Rho
Cancri
(ρ
Cnc).
The
use
of
Cancri
in
these
names
reflects
the
Latin
tradition
of
naming
stars
within
a
constellation
by
its
genitive
form
of
Cancer.