About J0806-4123
J0806-4123 is an uncommon pulsar. It spins once every 11,370.386 ms and carries a surface magnetic field around 2.54×10^13 G.
The collapsed core of a star that exploded: about one and a half Suns of matter crushed into a ball the size of a city, held up only by the refusal of neutrons to be squeezed further.