RA 298.1646° · Dec 51.0310° · star
3 more points to reach Common.
HD 188398 is a trash star. It lies about 784 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 8.73 and has spectral type F4III.
Its spectrum reads F4III — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HD 188398 in the constellation Cyg. At apparent magnitude 8.73, it is an easy target for binoculars.
Like any astronomical target, HD 188398 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 188398 scores 12 points on Spacedle's rarity scale, which places it in the trash tier. Another 3 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Yellow-white F-type star and Giant 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.