RA 309.0236° · Dec 1.0295° · star
3 more points to reach Rare.
HIP 101639 is an uncommon variable star. It sits in the constellation Aql, shines at apparent magnitude 10.16 and has spectral type M2.
Its spectrum reads M2 — 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 HIP 101639 in the constellation Aql. At apparent magnitude 10.16, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 101639 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.
HIP 101639 scores 31 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 3 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Cool red M-type star, Deep red star, Red dwarf, Gently 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.