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♐ Sagittarius, 22 November – 21 December. The ninth sign, mutable fire, ruled by Jupiter. The figure is an archer, usually drawn as a centaur with the bow drawn back; the glyph is simply the arrow. Its brighter stars form the asterism modern observers call the Teapot, and it lies toward the densest part of the Milky Way — looking at Sagittarius means looking at the centre of our own galaxy. The sign ends at the December solstice.
Religion and myth
The Babylonian constellation is MUL.PA.BIL.SAG, and Pabilsag is a god with a city and a cult, not a literary figure: tutelary deity of Isin, consort of the healing goddess Ninisina. On kudurru boundary stones he appears as a winged archer with a horse's or scorpion's body, a scorpion's sting for a tail, and frequently two heads — one human, one animal. Almost every strange feature of the later centaur-archer is already there in the Mesopotamian image, which makes this one of the clearest lines of descent in the zodiac.
Greek writers gave him a new biography. The best ancient authority, Eratosthenes' Catasterismi, identifies the archer as Crotus — son of Pan and Eupheme, the Muses' nurse — who lived on Helicon, invented the hunting bow, and was set among the stars at the Muses' request. Hyginus repeats this and adds a correction worth keeping: people who call the archer Chiron are confusing it with the separate constellation Centaurus. The popular Chiron identification, the wounded healer who tutored Achilles and Asclepius, is a later conflation. Either way this layer is Hellenistic literary catasterism, not worship.
Key dates
| Date | Event |
|---|---|
| c. 1200–1000 BCE | Pabilsag appears as an archer figure on Kassite and later boundary stones — the iconography that becomes the sign. |
| c. 1000 BCE (contested) | MUL.APIN lists MUL.PA.BIL.SAG among the stars in the path of the Moon. |
| 5th century BCE (contested) | Sagittarius becomes the ninth of twelve equal 30° signs. |
| c. 3rd century BCE | Eratosthenes' Catasterismi names the archer as Crotus and distinguishes him from Chiron. |
| c. 150 CE | Ptolemy catalogues Sagittarius in the Almagest and assigns Jupiter the rulership in the Tetrabiblos. |
| 1918 CE | Harlow Shapley locates the centre of the Milky Way in the direction of Sagittarius; the radio source Sagittarius A*, now understood as the galaxy's central black hole, is identified in 1974. |
| present | With about 24 degrees of precessional drift, the Sun crosses the stars of Scorpius and then Ophiuchus through most of tropical Sagittarius, reaching the constellation Sagittarius only around 17 December. |
In the year
Sagittarius is the last stretch of autumn running into midwinter — the mutable sign that empties the year into the solstice. In the northern agricultural calendar this was hunting and slaughter season, the weeks when meat was salted and smoked for winter, which suits an archer better than any personality theory does. The Roman Saturnalia (17–23 December) falls at its close, and the sign's reputation for restlessness and horizon-chasing sits oddly well against the shortest, most housebound days of the year.
Related
- Sagittarius (the constellation) — the actual stars: the Teapot, the galactic centre, and Sagittarius A*.
- Western Zodiac
- World Zodiacs
- Dhanu — the sidereal counterpart in the Vedic zodiac.
- Calendar