36_Draconis
36 Draconis
Star in the constellation Draco
36 Draconis is a star in the northern constellation Draco. It is faintly visible to the naked eye with an apparent visual magnitude of 4.99.[2] Based upon an annual parallax shift of 43.63[1] mas, it is located about 74.8 light years away. At that distance, the visual magnitude is diminished by an extinction of 0.129 due to interstellar dust.[2] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.353 arc seconds per year.[7] It is moving closer to the Sun with a radial velocity of −35.6 km/s.[3]
This is an ordinary F-type main-sequence star with a stellar classification of F5 V.[3] It has 1.23 times the mass of the Sun and 1.64 times the Sun's radius.[2] The star is around three[5] billion years old and is spinning with a projected rotational velocity of 8 km/s.[3] It is radiating 4.7 times the Sun's luminosity from its photosphere at an effective temperature of 6,638 K.[2]
Observations carried out in 2010 and 2012 detected a faint companion at an angular separation of 3.3 arcseconds. Judging by the age and magnitude, this is a red dwarf of class M3.[4]