The Serpent Bearer
Ophiuchus
Brightest star: Rasalhague
Overview
Ophiuchus is a large constellation covering about 948 square degrees, making it one of the biggest in the sky. It straddles the celestial equator and, significantly, the ecliptic passes through its southern portion between Scorpius and Sagittarius. This means the Sun spends more time in Ophiuchus (about 18 days) than in neighboring Scorpius (about 7 days), leading to periodic debates about whether it should be considered a zodiac sign. Its brightest star, Rasalhague (Alpha Ophiuchi), shines at magnitude 2.1. The constellation depicts a man holding a serpent, which is represented by the separate constellation Serpens. It is best observed during summer evenings.
Mythology
Ophiuchus is identified with Asclepius, the legendary physician of Greek mythology and son of Apollo. Asclepius was taught the art of healing by the centaur Chiron and became so skilled that he could raise the dead. When he resurrected Hippolytus, son of Theseus, Hades complained to Zeus that the natural order was being disrupted. Zeus struck Asclepius down with a thunderbolt but honored his healing gifts by placing him among the stars. The serpent he holds represents both healing and wisdom, as snakes were sacred in ancient medicine. The Rod of Asclepius, a serpent coiled around a staff, remains the universal symbol of medicine to this day.
Astrological Significance
Ophiuchus is not recognized as a zodiac sign in traditional Western astrology, which maintains twelve signs based on equal 30-degree divisions of the ecliptic established over two thousand years ago. However, the constellation's ecliptic position has made it a topic of ongoing discussion. Symbolically, Ophiuchus represents the healer archetype, wisdom gained through confronting darkness, and mastery over primal forces represented by the serpent. In some esoteric traditions, Ophiuchus is considered a sign of transformation and spiritual healing. Those drawn to this constellation may feel a calling toward healing professions or a deep desire to understand the mysteries of life and death.
Observing Tips
Ophiuchus is best observed during June through August. To find it, look north of Scorpius and east of Hercules. Rasalhague marks the serpent-bearer's head, while the body extends southward toward the ecliptic. The constellation contains several fine globular clusters, including M10, M12, M14, M19, M62, and M107, all visible in binoculars or small telescopes as fuzzy balls of ancient stars. Barnard's Star, the second-closest star system to the Sun at just 6 light-years, lies within Ophiuchus but requires a telescope to see at magnitude 9.5. It has the largest proper motion of any known star, moving noticeably against the background stars over decades.