Tau1 Capricorni
Tau1 Capricorni is a star in the constellation Capricornus. Its identifier is a Bayer designation that is Latinized from τ1 Capricorni, and abbreviated Tau1 Cap or τ1 Cap. This star has an apparent magnitude of 6.76, making it readily visible in binoculars, but not to the naked eye. Located approximately 750 light years from Earth, the star is receding with a heliocentric radial velocity of. Due to its location near the ecliptic, τ1 Cap can be occulted by the Moon and rarely planets.
τ1 Capricorni has a stellar classification of K1 III, indicating that it is an ageing K-type giant. At a modelled age of 270 million years, it has 3.4 times the mass of the Sun and an enlarged radius of. It shines at 191 times the luminosity of the Sun from its photosphere at an effective temperature of 4,626 K. τ1 Cap's metallicity – elements heavier than helium – is at solar level.