RA 182.7893° · Dec -83.7782° · star
5 more points to reach Uncommon.
HD 105770 is a common variable star. It lies about 623.6 light-years from Earth, sits in the constellation Oct, shines at apparent magnitude 7.38 and has spectral type Ap Si.
Its spectrum reads Ap Si — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HD 105770 in the constellation Oct. At apparent magnitude 7.38, it is an easy target for binoculars.
Like any astronomical target, HD 105770 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 105770 scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.
That score comes from 4 science badges — Variable star, White A-type star, Gently variable 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.