RA 267.5786° · Dec -47.2305° · star
8 more points to reach Rare.
HD 161858 is an uncommon variable star. It lies about 2,203.8 light-years from Earth, sits in the constellation Ara, shines at apparent magnitude 7.57 and has spectral type B6Vne.
Its spectrum reads B6Vne — 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 161858 in the constellation Ara. At apparent magnitude 7.57, it is an easy target for binoculars.
Like any astronomical target, HD 161858 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 161858 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 6 science badges — Variable star, Distant (over 1,000 light-years), Hot blue B-type star, Main-sequence 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.