Star in the constellation Ursa Major
15 Leonis Minoris is theFlamsteed designation for a single[ 14] star in the northerncircumpolar constellation ofUrsa Major . It has anapparent visual magnitude of 5.08,[ 3] making it a fifth magnitude star that is visible to the naked eye. Based onparallax measurements, it is located at a distance of 61.7 light years from theSun . The star has been examined for aninfrared excess , but none was detected.[ 15]
This star has astellar classification of G0 IV-V[ 4] with an age of about 9.3 billion years,[ 12] which suggests that it is an olderG-type main sequence star that may be evolving into asubgiant as the hydrogen at its core runs out. The estimated mass of the star is 15% greater than theSun's mass ,[ 8] and it is larger in girth than the Sun by +52%.[ 9] It is spinning with aprojected rotational velocity of 4 km/s.[ 11] The star is radiating almost three[ 2] times theluminosity of the Sun from itsphotosphere at aneffective temperature of 5,859 K,[ 4] giving it the yellow-hued glow of aG-type star .[ 16]
15 Leonis Minoris presents a significantly difference onproper motion measurements taken by theHipparcos andGaia spacecrafts, suggesting it may have an orbiting giant planet.[ 10]
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