J1433 is a white dwarf star located 1122 light years from Sol. It has an accretion disk of matter, causing it to look like a vortex. The vortex exists because J1433's companion brown dwarf, J1433 b, has lost some mass to J1433's accretion disk.
J1433 b orbits J1433 very, very quickly, once every hour and 17 minutes.
J1433 b
J1433 b is a medium-sized brown dwarf orbiting J1433 in a close orbit. It is of spectral class Late L and is likely losing mass to the white dwarf, which explains the cause of the accretion disk. It is denser than most brown dwarfs, due to J1433 having pulled some of its mass off in the past.
History
J1433 and J1433 b likely once shared a common envelope, when J1433 was still in its red giant phase. As a result, between the red giant phase and the present day, J1433 b has likely lost a significant amount of mass. This means that in its life, J1433 b was likely a small red dwarf star, before losing mass to its parent star to become a brown dwarf.