Ophiuchus

Ophiuchus is a large constellation straddling the celestial equator. Although not officially a zodiac sign, the Sun passes through Ophiuchus longer than Scorpius. It contains many globular clusters including M10, M12, M14, M62, and M107, plus Barnard's Star, the fourth closest star to the Sun.

Location in the Sky

When to Observe

Ophiuchus is best observed during July. It is located in the SQ3 quadrant and is primarily visible from the both hemispheres. The constellation contains 10 main stars forming its asterism, with 56 Bayer/Flamsteed designated stars in total. Its brightest star is Rasalhague.

Mythology & History

In Greek mythology, Ophiuchus represents Asclepius, the god of medicine, who learned the secret of immortality by watching one serpent heal another. Zeus killed Asclepius with a thunderbolt at the request of Hades, who feared no more souls would come to the underworld.