RA 258.8160° · Dec -33.1917° · star
4 more points to reach Rare.
HD 155805 is an uncommon star. It sits in the constellation Sco, shines at apparent magnitude 8.34 and has spectral type B7Ib/II.
Its spectrum reads B7Ib/II — 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 155805 in the constellation Sco. At apparent magnitude 8.34, it is an easy target for binoculars.
Like any astronomical target, HD 155805 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 155805 scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, On the zodiac, Hot blue B-type star and Supergiant — 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.