RA 145.8886° · Dec 29.9745° · star
10 more points to reach Rare.
15 Leo is an uncommon star. It lies about 159.9 light-years from Earth, sits in the constellation Leo, shines at apparent magnitude 5.64 and has spectral type A2IV.
Its spectrum reads A2IV — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for 15 Leo in the constellation Leo. At apparent magnitude 5.64, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 15 Leo is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
15 Leo scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Naked-eye visible, On the zodiac, White A-type star and Subgiant (leaving the main sequence) — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.