Delta_Leporis
Delta Leporis
Star in the constellation Lepus
Delta Leporis (δ Leporis) is a solitary,[11] orange-hued star in the southern constellation of Lepus. It is visible to the naked eye with an apparent visual magnitude of 3.85.[2] Based upon an annual parallax shift of 28.68 mas,[1] it is 114 light years distant from Earth.
This is an old, evolved K-type star with an age of about 10.7 billion years.[6] Keenan and McNeil (1989) classified it as K0 IIIb Fe−1.5 CH0.5,[4] indicating it is a giant star showing a deficiency of iron and an excess of cyanogen in its atmosphere. However, Gray et al. (2006) listed it as K1 IV Fe−0.5,[3] which would suggest a less evolved subgiant star. It may be a red clump star, which indicates it is generating energy through helium fusion at its core.[12]
The measured angular diameter of this star, after correction for limb darkening, is 2.63±0.04 mas.[13] At the estimated distance of this star, this yields a physical size of about 10 times the radius of the Sun.[7] It has only 94%[6] of the Sun's mass and is radiating 46[6] times the Sun's luminosity from its photosphere at an effective temperature of 4,660 K.[8]