38_Aurigae
38 Aurigae
K-type giant star in the constellation Auriga
38 Aurigae is a star located 236[1] light years away from the Sun in the northern constellation of Auriga.[8] It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 6.08.[2] The star is moving further from the Earth with a heliocentric radial velocity of +34 km/s,[2] and it has a relatively high proper motion, traversing the celestial sphere at the rate of 0.181 arc seconds per annum.[9] It is a probable member of the Hercules stream.[7]
This object is an aging giant star with a stellar classification of K0 III.[4] At the age of around 3.6[7] billion years it is a red clump giant, which indicates it is on the horizontal branch and is generating energy via helium fusion at its core.[3] The star has 1.59[5] times the mass of the Sun and has expanded to 7[6] times the Sun's radius. It is radiating 18[2] times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,834 K.[5]
38 Aurigae has a faint common proper motion companion at an angular separation of 152″, which is equivalent to a projected separation of 12,160 AU. This is a red dwarf star with a class of M5.3.[10]