RA 183.1959° · Dec -70.1518° · star
41 more points to reach Mythic.
HR 4645 is an anomaly variable star. It lies about 1,639 light-years from Earth, sits in the constellation Mus, shines at apparent magnitude 6.05 and has spectral type F6Ib.
Its spectrum reads F6Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HR 4645 in the constellation Mus. At apparent magnitude 6.05, it is an easy target for binoculars.
Like any astronomical target, HR 4645 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.
HR 4645 scores 79 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 41 points would lift it into a rarer tier.
That score comes from 9 science badges — Variable star, Distant (over 1,000 light-years), Yellow-white F-type star, Supergiant, Deep red star, Intrinsically luminous (Mv < −2), Strongly variable and Fades out of naked-eye view — 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.