Α_Chamaeleontis
Alpha Chamaeleontis
Star in the constellation Chamaleon
Alpha Chamaeleontis, Latinized from α Chamaeleontis, is a solitary[10] star in the southern circumpolar constellation of Chamaeleon. It has an apparent visual magnitude of 4.06[2] and thus is bright enough to be seen with the naked eye. With an annual parallax shift of 51.12 mas,[1] it is located 63.8 light years from the Sun. The star is drifting closer with a radial velocity of −13 km/s,[4] and is predicted to come to within 47 light-years in 666,000 years.[5]
This is an F-type main sequence star with a stellar classification of F5 V Fe−0.8,[3] where the 'Fe−0.8' notation indicates an anomalously low abundance of iron. It has an estimated 1.4 times the mass of the Sun,[6] 2.1 times the Sun's radius,[7] and radiates 7.5 times the solar luminosity from its outer atmosphere at an effective temperature of 6,580 K.[7] The star is around 1.8[6] billion years old with a projected rotational velocity that is too low to be measured.[8] The star has been examined for an infrared excess that would suggest the presence of an orbiting debris disk, but none was found.[11]