Magnitude 5.31 | Constellation Columba | |
Similar ESO 306‑17, NGC 1792, Mu Columbae, NGC 1808 | ||
Nu2 Columbae is a solitary star in the southern constellation of Columba. It can be seen with the naked eye, having an apparent visual magnitude of 5.31. With an annual parallax shift of 24.51 mas, it is estimated to lie about 133 light years from the Sun.
This star has a stellar classification of F5 V, indicating that it is an F-type main sequence star that is generating energy through the thermonuclear fusion of hydrogen into helium in its core region. It has about 1.65 times the mass of the Sun and 1.6 times the Sun's radius. X-ray emission has been detected from this star, with an estimated luminosity of 1.6 × 1029 erg s−1. It is about 1.8 billion years old and is spinning with a projected rotational velocity of 27.2 km/s. The star is radiating about 10 times the solar luminosity from its outer atmosphere at an effective temperature of 6,473 K.