RA 90.2745° · Dec 23.3390° · star
10 more points to reach Rare.
HD 250289 is an uncommon star. It lies about 2,695.5 light-years from Earth, sits in the constellation Gem, shines at apparent magnitude 8.23 and has spectral type B2III:e.
Its spectrum reads B2III:e — 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 250289 in the constellation Gem. At apparent magnitude 8.23, it is an easy target for binoculars.
Like any astronomical target, HD 250289 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 250289 scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), On the zodiac, Hot blue B-type star and Giant 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.