OPHIUCHUS AND SERPENS

Ophiuchus, the Serpent Bearer, sprawls his way across the center of the picture, his brightest star, Rasalhague (Alpha), at top center. Just down and to the right of Rasalhague is Rasalgethi in Hercules, a bit down and to the left Cebalrai (Beta), and down and to left of Cebalrai is Muliphen (Gamma). Ophiuchus is a distorted pentagon-shaped figure, its bottom starting with two stars close together toward lower center (Yed Prior, at right, and Yed Posterior) and running to the left through Zeta Ophiuchi and ending in bright Sabik. Marfik, Lambda Oph, is up and just to the right of Yed Prior. Theta Oph (seen in the context of the Milky Way west of Sagittarius) is the brightest of the string of four stars near the lower left corner. Rho Oph, the brighter of the two stars near the left lower edge, is better seen in the context of Scorpius whose bright star Antares is near the bottom left. 67 and 70 Oph are in v-shaped "Poniatowski's Bull" up and to the left of Cebalrai (as is invisible Barnard's Star). Coming off the bottom and swinging up to both the right and left are two streams of stars that make the divided figure of Serpens, the Serpent. The stream to the left is Serpens Cauda, the Serpent's Tail, that to the right Serpens Caput, the Serpent's Head. Unukalhai, the brightest star in Serpens Caput, is the bright star toward the lower right. Delta Ser is to the right and just up from it, while Beta Ser and Gamma Ser are progressively upward from Delta. Epsilon Ser is immediately to the left of Unukalhai. Kappa Ser lies in the middle of the Serpent's head immediately to the right of Gamma Ser. Xi Ser is up and to the left of Sabik. Serpens Cauda continues upward off the picture and ends in Alya, near Aquila. The Milky Way in Scutum and Sagittarius run downward at left.

To see a labelled image, push the star:

See Ophiuchus in context with Hercules, Lyra, and Draco.

See Ophiuchus and Serpens from Bayer's Uranometria of 1603.

See Serpens Cauda within the wide field around Sagittarius.

By Jim Kaler. Return to STARS.