RA 75.9672° · Dec -14.3702° · star
15 more points to reach Epic.
HR 1640 is a rare star. It lies about 1,853.2 light-years from Earth, sits in the constellation Lep, shines at apparent magnitude 6.42 and has spectral type B2IV.
Its spectrum reads B2IV — 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 1640 in the constellation Lep. At apparent magnitude 6.42, it is an easy target for binoculars.
Like any astronomical target, HR 1640 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 1640 scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.
That score comes from 6 science badges — Star, Distant (over 1,000 light-years), Hot blue B-type star, Subgiant (leaving the main sequence), Blue-white star and Intrinsically luminous (Mv < −2) — 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.