RA 76.7065° · Dec 43.1747° · star
4 more points to reach Uncommon.
HR 1644 is a common star. It lies about 776.6 light-years from Earth, sits in the constellation Aur, shines at apparent magnitude 6.2 and has spectral type F2IIp....
Its spectrum reads F2IIp... — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HR 1644 in the constellation Aur. At apparent magnitude 6.2, it is an easy target for binoculars.
Like any astronomical target, HR 1644 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 1644 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Yellow-white F-type star and Bright giant — 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.