Pi1 Doradus

Pi1 Doradus, Latinized from π1 Doradus, is a solitary star located in the southern constellation Dorado near the southwestern border with Mensa. It is faintly visible to the naked eye as an orange-hued point of light with an apparent magnitude of 5.54. Gaia DR3 parallax measurements imply a distance of 660 light-years and it is currently receding with a heliocentric radial velocity of $$. At its current distance, Pi1 Doradus' brightness is diminished by 0.24 magnitudes due to interstellar extinction and it has an absolute magnitude of −0.83.

Pi1 Doradus has a stellar classification of K5 III, indicating that it is an evolved K-type giant star. It has 1.67 times the mass of the Sun but at the age of 2.67 billion years, it has expanded to 56.5 times the radius of the Sun. It radiates 530 times the luminosity of the Sun from its enlarged photosphere at an effective temperature $$ Gaia DR3 stellar evolution models give a larger radius of and a higher luminosity of. Pi1 Doradus is metal enriched with an iron abundance of [Fe/H] = +0.10 or 126% that of the Sun's. Like many giant stars it spins slowly—having a projected rotational velocity of $$.