RA 233.7006° · Dec 10.5389° · star
8 more points to reach Rare.
13Del Ser is an uncommon variable star. It lies about 228.1 light-years from Earth, sits in the constellation Ser, shines at apparent magnitude 3.8 and has spectral type F0IV.
Its spectrum reads F0IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for 13Del Ser in the constellation Ser. At apparent magnitude 3.8, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 13Del Ser 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.
13Del Ser scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Naked-eye visible, Yellow-white F-type star, Subgiant (leaving the main sequence), Barely variable (under 0.05 mag) 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.