RA 154.9341° · Dec 19.4709° · star
12 more points to reach Rare.
40 Leo is an uncommon star. It lies about 69.7 light-years from Earth, sits in the constellation Leo, shines at apparent magnitude 4.78 and has spectral type F6IV.
Its spectrum reads F6IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for 40 Leo in the constellation Leo. At apparent magnitude 4.78, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 40 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.
40 Leo scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Naked-eye visible, On the zodiac, Yellow-white F-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.