Phi1 Cancri
Phi1 Cancri is a solitary, orange-hued star in the constellation Cancer. Its name is a Bayer designation that is Latinized from φ1 Cancri, and abbreviated Phi1 Cnc or φ1 Cnc. This star is faintly visible to the naked eye with an apparent visual magnitude of +5.57. Based upon an annual parallax shift of, it is approximately distant from the Sun. The star is drifting further away with a line of sight velocity of +25 km/s.
This is an evolved K-type giant star with a stellar classification of K5 III, having exhausted the hydrogen at its core then expanded off from the main sequence. The measured angular diameter of this star, after correction for limb darkening, is. At the estimated distance of Phi1 Cancri, this yields a physical size of about 27 times the radius of the Sun. It has 1.3 times the mass of the Sun and is radiating 195 times the Sun's luminosity from its photosphere at an effective temperature of.