RA 305.1177° · Dec 41.3643° · star
4 more points to reach Uncommon.
HIP 100289 is a common variable star. It lies about 259.3 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 10.63 and has spectral type B2e.
Its spectrum reads B2e — 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 HIP 100289 in the constellation Cyg. At apparent magnitude 10.63, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 100289 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 100289 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Variable star, Hot blue B-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.