Cepheus OB1


Cepheus OB1 is an OB association around the cluster NGC 7380. The region is approximately 3,400 parsecs from Earth in the constellation of Cepheus, although many of its stars lie in neighboring constellations like Cassiopeia.
Cepheus OB1 contains dozens of O and B class stars, but the brightest members are cool supergiants and hypergiants such as V509 Cassiopeiae and RW Cephei.
StarSpectral typeNotes
RW CepheiK2 0-IaVariable, one of the largest stars known
V354 CepheiM2.5 Iab / M3.5 IbVariable, one of the largest stars known
DH CepheiO5.5 V / O6 VBinary
HR 8752G0 Ia-0Yellow hypergiant
W CepheiK0ep-M2ep Ia + B0/B1Binary
U LacertaeM4epIab + BSpectroscopic binary
WR 152WN3Wolf–Rayet star