R Capricorni
R Capricorni (R Cap) 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. 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. The R Capricorni is losing mass at rate of 2.8*10/year