HD 85951
HD 85951 (HR 3923),formally named Felis , is a star in the constellation Hydra. With an apparent magnitude of 4.95, it's faintly visible under ideal conditions. Based on parallax measurements it is about 530 light-years (162 parsecs) from the Sun, but is drifting away with a heliocentric radial velocity of 50 km/s Nomenclature. HD 85951 was the brightest star in the now-obsolete constellation of Felis. In 2016, the IAU organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN approved the name "Felis" for this star on  1 June 2018 and it is now so included in the List of IAU-approved Star Names. Properties. This star is a K-type orange giant with a stellar classification of K5 III, which states that it has exhausted hydrogen at its core and left the main sequence. HD 85951 has a similar mass to our Sun, but has expanded to 57 times the Sun's radius. It radiates at a luminosity 721 times greater from its enlarged photosphere at an effective temperature of 3,970 Kelvin, which gives it a typical orange-yellow hue of a K-type star. HD