RA 98.6912° · Dec 8.8256° · star
8 more points to reach Rare.
HD 259986 is an uncommon variable star. It lies about 737.9 light-years from Earth, sits in the constellation Mon, shines at apparent magnitude 9.31 and has spectral type B8V.
Its spectrum reads B8V — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
Look for HD 259986 in the constellation Mon. At apparent magnitude 9.31, a small backyard telescope will bring it into view.
Like any astronomical target, HD 259986 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 259986 scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Hot blue B-type star, Main-sequence 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.