Hyi - Hydrus the Southern Water Snake

Legend for constellation star maps, IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), cc-by

Intro and Visual description

Hydrus has only three stars above the fourth magnitude.

Hydrus is the Little Snake, not to be confused with Hydra, the big one.

One of the eleven southern constellations created by Pieter Dirksz Keyser and Frederick de Houtman in 1596. These were published in Plate Aaa of Johann Bayer, Uranographia (1603).

Special Stars

Of easy-to-spot stars, the closest to the south pole is Beta-Hydri. Magnitude: 2.8. The south celestial pole actually lies in Octans the Octant.



Constellation Info

Abbr: Hyi

Genitive: Hydri

Size: 61 of 88

RA: 2 hours

Evening culmination (9 pm): December

Midnight Culmination: October

Decl: -70 degrees

Entirely visible from: S of 8° latitude

Partially visible from: between 8° and 32° latitude

Not visible at all from: N of 32° latitude


Bordering constellations:

Constellation - Names

Arabic: ثعبان البحر

Chinese: 水蛇座

English: Southern Water Snake

French: Hydre Mâle

German: Kleine (Südliche, Männliche) Wasser-schlange

Greek: Ύδρος

Hebrew: נחש מים קטן

Italian: Idra maschio

Latin: Hydrus

Russian: Южная Гидра

Spanish: Hidra Macho, Serpiente marina

Related Objects

Related Asterisms