R Hydrae

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

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.

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

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

Coordinates for epoch
Right ascension: 13h29m42.80s
Declination: −23°16'53.0"

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.