Top Qs
Timeline
Chat
Perspective
HD 146624
Star in the southern zodiac constellation of Scorpius From Wikipedia, the free encyclopedia
Remove ads
HD 146624 (d Scorpii) is a single,[3] white-hued star in the southern zodiac constellation of Scorpius. It is faintly visible to the naked eye, having an apparent visual magnitude of 4.80.[1] The distance to HD 146624 can be estimated from its annual parallax shift of 23.0 mas,[2] yielding a separation of 142 light years. At that distance, the visual magnitude is reduced by an extinction of 0.17 due to interstellar dust.[5] It is a member of the Beta Pictoris moving group, a set of ~12 million year old stars that share a common motion through space.[10]
This is an A-type main-sequence star with a stellar classification of A0 V,[3] and is suspected to be chemically peculiar.[11][6] It is a young star, just 10[3] million years old, with a projected rotational velocity of 39 km/s.[6] The mass of the star is greater than the Sun's, with De Rosa et al. (2014) estimating 1.49[3] times the mass of the Sun, while Zorec and Royer (2012) gives a multiplier of 2.13±0.02.[6] It has 1.60[7] times the Sun's radius and shines with 21 times the Sun's luminosity from its photosphere at an effective temperature of 9,441 K.[6]
The star displays an infrared excess, suggesting a circumstellar disk of orbiting material. This has a mean temperature of 280 K, matching a disk radius of 4.20 AU.[7]
Remove ads
References
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads