30 Geminorum is a suspected astrometric binary[7] star system in the northern zodiac constellation of Gemini.
It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.49.
[4] This is an aging giant star with a stellar classification of K0+ III Ca1,[3] having exhausted the supply of hydrogen at its core and expanded to 22[1] times the Sun's radius.
It is a red clump giant,[8] which means it is on the horizontal branch and is generating energy through helium fusion at its core.
It is radiating 189[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,518 K.[1] There is a 13th magnitude visual companion located at an angular separation of 21.20″ along a position angle of 187° from the brighter star, as of 2011.