R Hydrae

R Hydrae is a Mira-type variable star in the constellation Hydra.

Related Topics:
Mira-type variable star - Constellation - Hydra

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The magnitude of R Hydrae varies over a period of 389 days, between 3.21 and 11.00. The period of R Hydrae changes slowly.

Related Topics:
Magnitude - Period

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At maximum brightness the star can be seen with the naked eye, while at minimum a telescope of at least 5 cm is needed.

Related Topics:
Naked eye - Cm

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R Hydrae is approximately 2000 light years from Earth and is of spectral class M7.

Related Topics:
Light year - Earth - Spectral class

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