RA 234.8550° · Dec 27.6263° · star
2 more points to reach Uncommon.
HD 139837 is a common variable star. It lies about 160.1 light-years from Earth, sits in the constellation CrB, shines at apparent magnitude 8.99 and has spectral type G5.
Its spectrum reads G5 — a G-type star: the very same spectral class as our own Sun.
Look for HD 139837 in the constellation CrB. At apparent magnitude 8.99, it is an easy target for binoculars.
Like any astronomical target, HD 139837 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 139837 scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.
That score comes from 4 science badges — Variable star, Sun-like G-type star, 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.