Ophiuchus on 29 June 2026: Observing the Serpent-Bearer Constellation

At 11 p.m. BST on 29 June 2026, observers in London can look south to see Ophiuchus, a large but faint constellation. The sky will be unchanged through the week, and a nearly full moon will sit in Sagittarius’s teapot asterism, providing a bright reference point. In Sydney the same stars rise high in the northern sky, offering a clear view of the same pattern.

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Ophiuchus appears in the catalogue of the 2nd-century astronomer Ptolemy as one of the original 48 constellations. Greek tradition links it to Apollo wrestling a serpent that guarded Delphi’s Oracle, while Roman lore identifies the figure as Asclepius, a healer who learned immortality from a serpent’s medicinal practices before Zeus struck him down. The constellation also splits the neighboring Serpens into head (Serpens Caput) and tail (Serpens Cauda).

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Straddling the celestial equator, Ophiuchus is visible from both hemispheres. It lies opposite Orion and directly bisects Serpens, giving it a distinctive shape despite its faintness. Its large size makes it a demanding target for casual observers, but the presence of the bright moon nearby helps outline its faint stars.

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The dual mythic identities of Ophiuchus illustrate how ancient cultures projected different meanings onto the same stars, a fact that modern skywatchers can appreciate when the constellation appears alongside the moon in Sagittarius.

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The size and faintness of Ophiuchus, together with its location across the celestial equator, allow it to be seen from both hemispheres, giving observers in London and Sydney a common reference point. Its dual mythological identities also demonstrate how ancient cultures attached different stories to the same stars, adding cultural depth to contemporary sky-watching.

The Guardian

• “One of the original 48 constellations listed by Ptolemy in the 2nd century, it sits in the sky on the opposite side to Orion, the hunter.” — The Guardian, 2026

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• “In classical Greek mythology, Ophiuchus represents the Apollo wrestling with the serpent that guarded the Oracle at Delphi.” — The Guardian, 2026

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• “The Roman version is completely different: Ophiuchus is Asclepius, who learned the secrets of immortality by watching a serpent treat another with healing compounds made from herbs.” — The Guardian, 2026

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• “The constellation bisects the constellation Serpens, the serpent: to the west of Ophiuchus is Serpens Caput, the head of the serpent; to the east is Serpens Cauda, the serpent’s tail.” — The Guardian, 2026

The Guardian