R Hydrae
Star
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R Hydrae, abbreviated R Hya, is a single star in the equatorial constellation of Hydra, about 2.7° to the east of Gamma Hydrae. It is a Mira-type variable that ranges in apparent visual magnitude from 3.5 down to 10.9 over a period of 389 days. Wikipedia
Magnitude: -0.15
Radius: 460 R☉; 631 R☉
Luminosity: 7,375 L☉; 10,000 L☉
Right ascension: 13h 29m 42.782s
Constellation: Hydra
B−V color index: 1.317±0.254
Mass: 2 M☉