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The constellation extends southward to −30° declination. Segments of the ecliptic within Ophiuchus are south of −20° declination (see chart at right). In contrast to Orion, from November to January (summer in the Southern Hemisphere, winter in the Northern Hemisphere), Ophiuchus is in the daytime sky and thus not visible at most latitudes.
Epsilon Ophiuchi or ε Ophiuchi, formally named Yed Posterior (/ ˌ j ɛ d p ɒ ˈ s t ɪər i ər /), [12] [13] is a red giant [7] star in the constellation of Ophiuchus.Located less than five degrees south of the celestial equator in the eastern part of the constellation, [1] it forms a naked eye optical double with Delta Ophiuchi (named Yed Prior [13]).
Theta Ophiuchi, Latinized from θ Ophiuchi, is a multiple star system in the equatorial constellation of Ophiuchus. It lies on the "right foot" of the serpent-bearer, just southwest of Kepler's Star, the nova of 1604.
Barnard's Star is a small red dwarf star in the constellation of Ophiuchus.At a distance of 5.96 light-years (1.83 pc) from Earth, it is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and is the closest star in the northern celestial hemisphere. [15]
This is the list of notable stars in the constellation Ophiuchus, sorted by decreasing brightness. Name B F G. [1] Var HD HIP RA Dec vis. mag. abs. mag. Dist. Sp. class
Ophiuchus molecular cloud, Integral 691, XSS J16271-2423 See also: Lists of nebulae The Rho Ophiuchi cloud complex is a complex of interstellar clouds with different nebulae , particularly a dark nebula which is centered 1° south of the star ρ Ophiuchi , which it among others extends to, of the constellation Ophiuchus .
The Snake Nebula (also known as Barnard 72) is a dark nebula in the Ophiuchus constellation. It is a small but readily apparent SP-shaped dust lane that snakes out in front of the Milky Way star clouds from the north-north-west edge of the bowl of the Pipe Nebula. Its thickness runs between 2′ and 3′ and runs around 6′ in the north-west ...
Zeta Ophiuchi (ζ Oph, ζ Ophiuchi) is a single [9] star located in the constellation of Ophiuchus. It has an apparent visual magnitude of 2.6, making it the third-brightest star in the constellation. Parallax measurements give an estimated distance of roughly 440 light-years (130 parsecs) from the Earth. [1]