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Zeta Cephei has a spectral classification of K1.5Ib, [3] indicating that it is a lower luminosity red supergiant star. It is about 173 times larger than the Sun and has a surface temperature of 4,393 K. [8] The luminosity of Zeta Cephei is approximately 10,000 times that of the Sun. [8] At a distance of about 840 light-years, [11] Zeta Cephei has an apparent magnitude (m) of 3.4 and an ...
Despite this, its size is far from the two known hypergiants in this constellation, Me Cephei and VV Cephei. [1] [3] [4] The bolometric luminosity of ST Cephei is 8,400 times greater than that of the Sun. It has a mass 9 times greater than the Sun, at the limit from which stars end their lives by exploding as supernovae.
Rho 2 Cephei, Latinized from ρ 2 Cephei, or simply ρ Cephei, is a solitary [9] star in the northern constellation of Cepheus.With an apparent visual magnitude of 5.50, [2] it is faintly visible to the naked eye, forming an optical pair with Rho 1 Cephei.
Cepheus is a constellation in the deep northern sky, named after Cepheus, a king of Aethiopia in Greek mythology. It is one of the 48 constellations listed by the second century astronomer Ptolemy, and it remains one of the 88 constellations in the modern times. The constellation's brightest star is Alpha Cephei, with an apparent magnitude of 2.5.
SS Cephei is a variable star in the constellation Cepheus. It is of spectral type M5IIIvar, and has an estimated temperature of 3,700 °F (2,310 K). The star is 847.18 light-years (247.52 parsecs ) from Earth.
Nu Cephei (ν Cephei) is a class A2, fourth-magnitude blue supergiant star in the constellation Cepheus, visible to the naked eye. It is a white pulsating α Cygni variable star located about 4,700 light-years from Earth. ν Cephei is a member of the Cepheus OB2 stellar association, [5] which includes stars such as μ Cephei and VV Cephei. [10]
Xi Cephei (ξ Cephei, abbreviated Xi Cep, ξ Cep) is a multiple star system in the constellation of Cepheus.It is approximately 86 light-years from Earth. [6]It consists of two binary stars, designated Xi Cephei A and B, together with a more distant companion, Xi Cephei C.
11 Cephei is a single [8] star in the northern constellation of Cepheus, [7] located 184 light years away from the Sun. [1] It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.55. [2] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.153 arc seconds per ...