About J1214-5830
J1214-5830 is an uncommon pulsar. It spins once every 909.823 ms, has a dispersion measure of 141.1 pc cm⁻³ and carries a surface magnetic field around 2.23×10^11 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.