PSO J318.5−22

Common card · No. 485127

PSO J318.5−22 is an extrasolar planetary-mass object that does not orbit any star, an analog to directly imaged young gas giants. There is no consensus yet among astronomers whether the object should be referred to as a rogue planet, as a young brown dwarf, or as a sub-brown dwarf. It is approximately 80 light-years away and belongs to the Beta Pictoris moving group. The object was discovered in 2013 in images taken by the Pan-STARRS PS1 wide-field telescope. PSO J318.5-22's age is inferred to be 23 million years, the same age as the Beta Pictoris moving group. Based on its calculated temperature and age, it is classified under the brown dwarf spectral type L7.

Read on Wikipedia · Image N. Metcalfe & Pan-STARRS 1 Science Consortium, Attribution