23 Librae
23 Librae is a solar analog star located 85 light-years away in the zodiac constellation Libra, making it visible from most of the Earth's surface. With an apparent visual magnitude of 6.45, it requires dark skies and good seeing conditions to see with the naked eye. Two extrasolar planets are known to orbit 23 Librae, designated 23 Librae b and c respectively.
Properties
23 Librae has a spectral type of G5 V, indicating that this is a main sequence star that is generating energy through the thermonuclear fusion of hydrogen at its core. This energy is being radiated from the outer envelope at an effective temperature of about 5,762 K, giving it the yellow hue typical of G-type stars. Its age is estimated at 5.00 billion years. Based upon parallax measurements, this star is located at a distance of from the Earth.23 Librae is slightly larger than the Sun, with an estimated 112% of the Sun's mass and 125% of the Sun's radius. It is a metal-rich star with an abundance of elements heavier than helium, its iron content being 70% greater than the solar amount. It appears to be rotating slowly, with the projected rotational velocity of 2.2 km∙s−1 giving a lower bound to the actual azimuthal velocity along the equator.