参宿六

Also known as Kappa Orionis, κ Orionis, κ Ori, ROT 929, WH 507, SAO 132542, PPM 188455, PLX 1330

Saiph , designation Kappa Orionis (κ Orionis, abbreviated Kappa Ori, κ Ori) and 53 Orionis (53 Ori), is a blue supergiant star and the sixth-brightest star in the constellation of Orion. Of the four bright stars that compose Orion's main quadrangle, it is the star at the south-eastern corner. A northern-hemisphere observer facing south would see it at the lower left of Orion, and a southern-hemisphere observer facing north would see it at the upper right. Parallax measurements yield an estimated distance of from the Sun. It is smaller, less luminous but hotter at its surface than Rigel with an