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Zeta Ophiuchi

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zeta ophiuchi star

Zeta Ophiuchi (ζ Oph) is a hot blue subgiant star located 366 light-years away in the constellation Ophiuchus. With an apparent magnitude of 2.57, it… Read More »Zeta Ophiuchi


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rasalgethi star,alpha herculis

Rasalgethi, Alpha Herculis A (α Her A) is a red supergiant or bright giant located in the northern constellation Hercules, near the border with Ophiuchus.… Read More »Rasalgethi