RA 158.1401° · Dec -44.6185° · star
9 more points to reach Rare.
HR 4139 is an uncommon star. It lies about 397.3 light-years from Earth, sits in the constellation Vel, shines at apparent magnitude 5.91 and has spectral type G6/G8III.
Its spectrum reads G6/G8III — a G-type star: the very same spectral class as our own Sun.
Look for HR 4139 in the constellation Vel. At apparent magnitude 5.91, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 4139 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.
HR 4139 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Naked-eye visible, Sun-like G-type star and Giant 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.