RA 80.9263° · Dec -0.1598° · star
4 more points to reach Rare.
HR 1781 is an uncommon star. It lies about 876.8 light-years from Earth, sits in the constellation Ori, shines at apparent magnitude 5.69 and has spectral type B1.5V.
Its spectrum reads B1.5V — 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 HR 1781 in the constellation Ori. At apparent magnitude 5.69, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 1781 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.
HR 1781 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 6 science badges — Star, Naked-eye visible, In Orion's hunting ground, Hot blue B-type star, Main-sequence star and Blue-white 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.