RA 5.0840° · Dec -57.1634° · star
13 more points to reach Epic.
HD 1639 is a rare variable star. It sits in the constellation Phe, shines at apparent magnitude 9.09 and has spectral type M4/M5III.
Its spectrum reads M4/M5III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
Look for HD 1639 in the constellation Phe. At apparent magnitude 9.09, a small backyard telescope will bring it into view.
Like any astronomical target, HD 1639 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.
HD 1639 scores 37 points on Spacedle's rarity scale, which places it in the rare tier. Another 13 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Cool red M-type star, Giant star, Deep red star, Strongly variable 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.