Magnitude 5.55 | Constellation Lupus | |
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People also search for Phi2 Lupi, Tau2 Lupi, Xi1 Lupi | ||
Xi2 Lupi (ξ2 Lup, ξ2 Lupi) is a member of a double star with Xi1 Lupi in the southern constellation of Lupus. As of 2004, the pair had an angular separation of 10.254 arc seconds along a position angle of 49.21°. Xi2 Lupi is visible to the naked eye with an apparent visual magnitude of 5.55. Based upon an annual parallax shift of 21.71 mas as seen from Earth, it is located roughly 150 light years from the Sun. It has a peculiar velocity of 14.3±1.9 km/s relative to its neighbors, and is probably (86% chance) a runaway star.
This is a B-type main sequence star with a stellar classification of B9 V. It has an estimated 2.38 times the mass of the Sun and radiates 10.6 times the Sun's luminosity from its outer atmosphere at an effective temperature of 9,725 K. Xi2 Lupi is about 381 million years old and is spinning relatively rapidly with a projected rotational velocity of 184 km/s.