Tau1 Gruis is a G-type main-sequence star of spectral type G0 V. It is estimated that the star has about 1.28 times the mass of the Sun, 1.71 times the Sun's radius, and about 3.6 times the luminosity.
Tau1 Gruis is a G-type main-sequence star with spectral classification G0 V. In terms of size and brightness, it is estimated to be about 1.28 times more massive than our solar system's central star, 1.71 times larger in diameter, and emits roughly 3.6 times more light.