The
spectrum of this star shows it to be an ordinary
G-type main sequence star with a
stellar classification of G0 V. The properties are sufficiently similar to the Sun that it is considered a
solar analog. It is an estimated 3.2 billion years old and is spinning with a
projected rotational velocity of 5 km/s. This star has 17% more mass and 18% greater radius compared to the Sun, while the composition is similar to the Sun. It is radiating 1.75 the luminosity of the Sun into space from its
photosphere at an
effective temperature of 6,086 K, giving it the golden-hued glow of a
G-type star. Observation in the infrared shows an
excess emission that suggests the presence of a circumstellar disk of dust, known as a
debris disk. This material has a mean temperature of 60 K, indicating that it is orbiting at a distance of about from the host star, ranging from with an
inclination of to the
plane of the sky. The dust has about half the mass of the Moon and is around 600 million years old. The star is being examined for evidence of
extrasolar planets, but none have been found as of 2006. There is an
optical companion which is 36
arcseconds away and has an apparent magnitude of +8.4. Psi5 Aurigae used to be known to be part of a much bigger constellation named
Telescopium Herschelii before it was unrecognized by the
International Astronomical Union (IAU). ==References==