RA 295.9067° · Dec -37.5388° · star
9 more points to reach Rare.
HR 7491 is an uncommon star. It lies about 635.8 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 6.14 and has spectral type B8IV/V.
Its spectrum reads B8IV/V — 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 7491 in the constellation Sgr. At apparent magnitude 6.14, it is an easy target for binoculars.
Like any astronomical target, HR 7491 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 7491 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Toward the galactic centre, On the zodiac, Hot blue B-type star and Subgiant (leaving the main sequence) — 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.