About J0141+6009
J0141+6009 is an uncommon pulsar. It spins once every 1,222.949 ms, has a dispersion measure of 34.93 pc cm⁻³ and carries a surface magnetic field around 7.00×10^11 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.