A binary star is a star system consisting of two stars orbiting around their common barycenter.
Cepheus is a constellation in the northern sky, which is named after Cepheus (a King in the Greek mythology).
Below is an ordered list of the largest stars currently known by radius.
NGC 7380 (also known as the Wizard Nebula) is an open cluster discovered by Caroline Herschel in 1787.
RW Cephei is an orange hypergiant star in the constellation Cepheus, at the edge of the Sharpless 132 HII region and close to the small open cluster Berkeley 94.
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
U Lacertae is a spectroscopic binary star in the constellation Lacerta.
V354 Cephei is a red supergiant star located within the Milky Way.
V509 Cassiopeiae (V509 Cas or HR 8752) is one of two yellow hypergiant stars found in the constellation Cassiopeia, which also contains Rho Cassiopeiae.
W Cephei is a spectroscopic binary and variable star located in the constellation Cepheus.
A yellow hypergiant is a massive star with an extended atmosphere, a spectral class from A to K, and an initial mass of about 20–60 solar masses but having lost as much as half that mass.