υ1 Hydrae

Upsilon1 Hydrae marks one of the 'coils' of Hydra, and the snake curls toward the northeast here: binoculars.

Upsilon1 is a yellow giant; upsilon2 a blue subgiant. They are not a physical pair, but are slowly drifting away from each other.

Upsilon1 was one of the principal targets for the Okayama Planet Search program; in fact a brown dwarf was discovered orbiting the star with an orbit of about 4.1 years.

The star just out of view here, lambda Hydrae, marks about a third of the way down the Hydra's outstretched form. It's due south from Regulus (alpha Leonis) and is a convenient point if you wish to study the small constellation lying between Hydra and Leo at this point, which is Sextans.

Place lambda at the northwest corner of your field and move southeast one binocular field of view: mu Hydrae will appear near the centre of your viewing field.

Click on mu Hydrae on the map for its details.

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1999-2014 by Richard Dibon-Smith.