About J0608+00
J0608+00 is an uncommon pulsar. It spins once every 1,076.2 ms and has a dispersion measure of 48.5 pc cm⁻³.
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.