RA 120.8961° · Dec -40.0031° · star
19 more points to reach Mythic.
Naos is an anomaly variable star. It lies about 1,083.6 light-years from Earth, sits in the constellation Pup, shines at apparent magnitude 2.21 and has spectral type O5IAf.
Its spectrum reads O5IAf — an O-type star — the hottest, rarest main class there is. Fewer than one star in a million is an O, and none of them lasts long.
Look for Naos in the constellation Pup. At apparent magnitude 2.21, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Naos 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.
Naos scores 101 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 19 points would lift it into a rarer tier.
That score comes from 10 science badges — Variable star, Distant (over 1,000 light-years), Naked-eye visible, Has a proper name, Blazing O-type star, Supergiant, Blue-white star and Blindingly luminous (Mv < −5) — 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.