RA 220.4898° · Dec -37.7936° · exoplanet
5 more points to reach Anomaly.
b Cen AB b is an epic exoplanet. It lies about 319.9 light-years from Earth, shines at apparent magnitude 4.01, has spectral type B2.5 V and spans roughly 12.4 Earth radii.
Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
At apparent magnitude 4.01, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, b Cen AB 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.
b Cen AB b scores 73 points on Spacedle's rarity scale, which places it in the epic tier. Another 5 points would lift it into a rarer tier.
That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Long-period world, Circumbinary (orbits both stars), Directly imaged, Its star is visible to the naked eye and Orbits beyond Neptune's distance — 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.