Epsilon Leporis
Star in the constellation Lepus
- 1 min read
- 1 chapter
Related on Lably
Through Star, Constellation and Parallax
This is an evolved giant star with a stellar classification of K4 III that has expanded to 40 times the Sun's radius. It is about 1.72 billion years old and has 1.70 times the mass of the Sun, with a luminosity 372 times as great. The outer atmosphere is cooler than the Sun's with an effective temperature of 4,131 K, giving it the orange hue of a K-type star. In terms of its composition, this star shows a similar abundance of elements other than hydrogen and helium to the Sun.
The envelope of this star is undergoing oscillations that show up as changes in the star's radial velocity. Over long durations these follow a linear trend, in combination with shorter period oscillations occurring over a few days. These oscillations are unlikely to be the result of rotational module as that would imply a high rotation rate, which would display itself through strong X-ray emissions. Instead, they may be the result of solar-like and Mira-like oscillations.
Nomenclature
Epsilon Leporis, Latinized from ε Leporis, is the star's Bayer designation.
In Chinese astronomy, ε Leporis forms with μ Leporis the asterism Ping (屏), representing a screen in front of a toilet. The IAU Working Group on Star Names approved the name Ping for ε Leporis on 22 March 2026.

