Hydrus (constellation); the Water Snake
A small southern constellation; not to be confused with うみへび座 (Hydra).
Hydrus is a small constellation in the southern hemisphere.
Standard kanji spelling for the constellation Hydrus.
Mixed kana-kanji spelling; common in astronomical contexts.
From 水 (water) + 蛇 (snake) + 座 (constellation), a direct translation of the Latin name Hydrus.