RA 326.7602° · Dec -16.1273° · star
9 more points to reach Epic.
Deneb Algedi is a rare variable star. It lies about 38.7 light-years from Earth, sits in the constellation Cap, shines at apparent magnitude 2.85 and has spectral type A5mF2 (IV).
Its spectrum reads A5mF2 (IV) — 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 Deneb Algedi in the constellation Cap. At apparent magnitude 2.85, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Deneb Algedi 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.
Deneb Algedi scores 41 points on Spacedle's rarity scale, which places it in the rare tier. Another 9 points would lift it into a rarer tier.
That score comes from 8 science badges — Variable star, Naked-eye visible, Has a proper name, On the zodiac, White A-type star, Subgiant (leaving the main sequence), 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.