RA 89.2284° · Dec 35.5789° · star
9 more points to reach Uncommon.
HD 39864 is a common variable star. It lies about 1,503 light-years from Earth, sits in the constellation Aur, shines at apparent magnitude 7.53 and has spectral type M....
HD 39864 is a common variable star worth 15 points across 2 science badges. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.
Look for HD 39864 in the constellation Aur. At apparent magnitude 7.53, it is an easy target for binoculars.
Like any astronomical target, HD 39864 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 39864 scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 9 points would lift it into a rarer tier.
That score comes from 2 science badges — Variable star and Distant (>1000 ly) — 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.