High proper motion star; Camelopardalis
HD 117566 , also known asHR 5091 , is a solitary yellow-huedstar [ 15] circumpolar constellation Camelopardalis . It has anapparent magnitude of 5.74,[ 2] naked eye . This object is relatively close at a distance of 291light years based onGaia DR3 parallax measurements but is receding with a heliocentricradial velocity ofkm/s [ 7] magnitudes due tointerstellar dust .[ 16]
HD 117566 has astellar classification of G3 IIIb Fe−1 CH1,[ 5] G-type giant with an under-abundance ofiron and an overabundance of theCH radical in itsspectrum . Itsevolutionary stage is unclear. A 1994 paper places it in theHertzsprung gap ,[ 3] hydrogen core fusion and is now evolving toward thered giant branch (RGB). However, Mishenina et al. (2006) said that HD 117566 is already past the RGB and is on thehorizontal branch , fusinghelium at its core.[ 4] mass of the Sun [ 9] million years ,[ 7] Sun's radius .[ 10] luminosity of the Sun [ 1] photosphere at aneffective temperature ofK [ 12] metallicity [ 11] projected rotational velocity ofkm/s [ 13]
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