R Capricorni

R Capricorni is a star in the constellation of Capricornus. It has an apparent [visual magnitude] which varies between 9.4 and 14.9. A mira variable and ageing red giant, it is in the asymptotic giant branch stage of its lifespan. It is a carbon star.
John [Russell Hind] discovered this variable star in 1848. It appeared with its variable [star designation], R Capricorni, in Annie Jump Cannon's 1907 work, Second Catalogue of Variable Stars.
R Capricorni is too far from earth for its parallax to be measured effectively; Guandalini and Cristallo calculated the luminosity of Mira variables based on their periods. Using a period of 345.13 days, they calculated the absolute magnitude of R Capricorni to be -4.58.
R Capricorni is losing mass at rate of /year.