RA 93.7194° · Dec 22.5068° · star
18 more points to reach Anomaly.
Propus is an epic variable star. It lies about 384.6 light-years from Earth, sits in the constellation Gem, shines at apparent magnitude 3.31 and has spectral type M3III.
Its spectrum reads M3III — 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 Propus in the constellation Gem. At apparent magnitude 3.31, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Propus 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.
Propus scores 60 points on Spacedle's rarity scale, which places it in the epic tier. Another 18 points would lift it into a rarer tier.
That score comes from 10 science badges — Variable star, Naked-eye visible, Has a proper name, On the zodiac, Cool red M-type star, Giant star, Deep red star and Intrinsically luminous (Mv < −2) — 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.