RA 337.2538° · Dec 40.3155° · star
5 more points to reach Epic.
HD 213191 is a rare variable star. It lies about 2,740.8 light-years from Earth, sits in the constellation Lac, shines at apparent magnitude 8.97 and has spectral type M4e-M8.2e.
Its spectrum reads M4e-M8.2e — 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 213191 in the constellation Lac. At apparent magnitude 8.97, it is an easy target for binoculars.
Like any astronomical target, HD 213191 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 213191 scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), Cool red M-type star, Red dwarf, Dramatic variable (over 2 magnitudes) 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.