NOTABLE STARS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Algieba (Gamma Leonis) Gamma Leonis Photo credit: Rainer Anton The third brightest star in the constellation Leo. Algieba is a magnificent binary system with orange-red and yellow components visible through a modest telescope under good atmospheric conditions; its Arabic name means "the forehead". The brighter component (magnitude 2.6) is a giant K star with a surface temperature of 4,400 K and a luminosity of 180 Lsun; its partner is a magnitude 3.8 giant G star with a temperature of 4,900 K and a luminosity of 50 Lsun. The angular separation of just over 4" means that the two stars are at least 170 AU apart – four times the Pluto-Sun distance – and have an orbital period of over 500 years. Visual magnitude 2.01 Absolute magnitude -0.92 Spectral type K0III + G7III Distance 126 light-years (39 pc) Position R.A. 10h 19m 58.3s, Dec. +19° 50' 30" Other designations 41 Leo, BD +20°2467, HD 89484, LTT 12764/12765, GCTP 2423.00, SAO 81298, ADS 7724, HIP 50583 Related category    • NOTABLE STARS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP