title: HD 23474
text: # HD 23474
  
  HD 23474 (HR 1154) is a double star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.30, placing it near the max naked eye visibility. The system is situated at a distance of about 750 light years and is currently receding with a heliocentric radial velocity of 2.4 km/s.
  
  As of 2018, the pair have a separation of 0.2 arcseconds along a position angle of 92°.
  
  The primary or visible component has a stellar classification of K2 III, indicating that it is a red giant. As a result, it has expanded to a diameter of 33.51 $R_☉$ and has an effective temperature of 4,556 K, giving an orange hue. It has 121% the mass of the Sun and shines with a luminosity of 227 $L_☉$ from its enlarged photosphere. HD 23474 spins with a poorly constrained projected rotational velocity of 1.2 km/s and has a metallicity around solar level.
  
  