16 Persei is a single,[1] suspected variable star in the northern constellation of Perseus, located approximately 121 light years away based on parallax. It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22. This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s. It displays a relatively high proper motion, traversing the celestial sphere at the rate of per year.
Based upon a stellar classification of F2 III, this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence. It is a possible pulsating Delta Scuti variable, although there is some uncertainty about this classification. However, Kunzli and North (1998) found no variation.[2] The star is 1.44 billion years old with 1.8 times the mass of the Sun and 3.2 times the Sun's radius. It shows a high rotation rate with a projected rotational velocity of 149 km/s, which is causing an equatorial bulge that is an estimated 24% larger than the polar radius. 16 Persei is radiating 23 times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K.
It has two reported visual companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234".[3]