RA 185.9460° · Dec 42.5427° · star
14 more points to reach Epic.
4 CVn is a rare variable star. It lies about 310.3 light-years from Earth, sits in the constellation CVn, shines at apparent magnitude 6.03 and has spectral type F3IV.
Its spectrum reads F3IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for 4 CVn in the constellation CVn. At apparent magnitude 6.03, it is an easy target for binoculars.
Like any astronomical target, 4 CVn 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.
4 CVn scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Yellow-white F-type star, Subgiant (leaving the main sequence), Gently variable, Fades out of naked-eye view and A named variable star — 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.