RA 16.5095° · Dec -22.4536° · exoplanet
10 more points to reach Rare.
HIP 5158 b is an uncommon exoplanet. It lies about 168.3 light-years from Earth, shines at apparent magnitude 10.16, has an equilibrium temperature near 220 K and spans roughly 13.6 Earth radii.
Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
At apparent magnitude 10.16, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 5158 b 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.
HIP 5158 b scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Eccentric orbit and Multi-planet system — 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.