Magnitude 5.17 | Constellation Eridanus | |
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ΞΎ Eridani (latinised as Xi Eridani) is a solitary star in the constellation Eridanus. With an apparent visual magnitudeof 5.17, it is faintly visible to the naked eye on a clear, dark night. Based upon an annual parallax shift of 0.00156 arcseconds, it is located around 209 light years from the Sun.
This is an ordinary A-type main sequence star with a stellar classification of A2 V, indicating that it is generating energy through the thermonuclear fusion of hydrogen into helium in its core region. It is around 450 million years old and has a relatively high rate of rotation with a projected rotational velocity of 194 km/s. The star has about 2.3 times the mass of the Sun, 2.2 times the Sun's radius, and radiates 27.6 times the solar luminosity from its outer atmosphere at an effective temperature of 8,400 K.