RA 331.4707° · Dec 33.5069° · star
18 more points to reach Anomaly.
HD 209890 is an epic variable star. It lies about 671.1 light-years from Earth, sits in the constellation Peg, shines at apparent magnitude 8.47 and has spectral type C9e.
Its spectrum reads C9e — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.
Look for HD 209890 in the constellation Peg. At apparent magnitude 8.47, it is an easy target for binoculars.
Like any astronomical target, HD 209890 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 209890 scores 60 points on Spacedle's rarity scale, which places it in the epic tier. Another 18 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Carbon star (sooty red), Deep red star, Dramatic variable (over 2 magnitudes) 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.