Lepus

Definition

Lepus (Latin for "the Hare") is a small southern constellation lying directly below Orion, between Canis Major to the east and Eridanus to the west. It is one of the 48 classical constellations catalogued by Ptolemy in the *Almagest* and is preserved unchanged in the modern IAU list. Lepus contains no first-magnitude stars; its brightest is Arneb (α Leporis, magnitude 2.6).

In Tradition

Within the classical Greco-Roman constellation tradition, Lepus is read as one of Orion's mythological companions — a hare hunted by Orion or by his dogs, depending on the source. In the Egyptian astronomical-iconographic tradition documented by Belmonte and Lull (2023), the Egyptian Sah constellation — identified with Orion — likely extended from Orion's Belt southward to the stars now grouped as Lepus, suggesting that the Egyptian celestial Hunter encompassed both the Greek Orion and the Greek Hare.

In Practice

Practitioners encountering Lepus in fixed-star work locate it by reference to its position south of Orion's Belt and west of Sirius. Robson's *Fixed Stars and Constellations in Astrology* (1923) is the standard early-20th-century reference for Lepus's stars (Arneb at α, Nihal at β). Brady's *Book of Fixed Stars* gives modern interpretive treatment for paranatella involving Lepus stars. The constellation contributes few stars to the main fixed-star delineation traditions because none reach the brightness threshold Ptolemy used in *Tetrabiblos* I.9; the Behenian and Persian Royal-Star corpora do not include Lepus stars.

Historical Origin

Lepus is one of the 48 classical constellations catalogued by Ptolemy in the *Almagest* (c. 150 CE) and preserved through the Roman astronomical tradition into the modern IAU constellation list. The Egyptian extension of Sah-Orion southward through Lepus is documented in the Belmonte-Lull *Astronomy of Ancient Egypt* (2023) Glossary entry on Sah, drawing on Pyramid-Texts ascensional theology and Old Kingdom funerary literature.

Etymology

Origin: Latin. Meaning: The Hare.

Further Reading

• Vivian E. Robson, The Fixed Stars and Constellations in Astrology
• Bernadette Brady, Brady's Book of Fixed Stars
• Juan Antonio Belmonte & José Lull, Astronomy of Ancient Egypt