Transit Date of principal star:
21 October

Hydrus, "The Lesser Snake", was one of Johann Bayer's constellations, found first in his 1603 publication Uranometria. It was meant to be the southern hemisphere's answer to Hydra, but it has far fewer objects of interest.

Hydrus is a rather stiff snake, perhaps mostly resembling a cobra, with its head erect and body curled. As with most of these obscure constellations, its Bayer stars are far from complete, and fairly faint.

Binary stars:

h3435 and h3475 ae two fine binaries in the region of alpha Hydri. See the Binocular Section for more details.

For a more detailed appreciation of Hydrus, visit the Binocular Section.

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