RA 329.5846° · Dec 82.8711° · star
7 more points to reach Uncommon.
HD 209943 is a common variable star. It lies about 97.3 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 7.45 and has spectral type F5.
Its spectrum reads F5 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HD 209943 in the constellation Cep. At apparent magnitude 7.45, it is an easy target for binoculars.
Like any astronomical target, HD 209943 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 209943 scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.
That score comes from 4 science badges — Variable star, Never sets (northern circumpolar), Yellow-white F-type star and A named variable 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.