The Neutron Star Catalog is the most comprehensive catalog of neutron stars, containing information on over 2,000 neutron stars. It is maintained by the University of California, Berkeley.

The Neutron Star Catalog provides information on the name, position, distance, mass, spectral type, luminosity, magnetic field, rotation period, pulse profile, and glitch history of neutron stars.

The Pulsar Catalog is dedicated to pulsars, providing information on their positions, periods, and other properties. It is maintained by the Jodrell Bank Centre for Astrophysics.

The Catalog of Galactic Neutron Stars aims to list all known neutron stars in the Milky Way galaxy, providing their positions, distances, and other basic information.

The Catalog of Extragalactic Neutron Stars focuses on neutron stars located outside of the Milky Way galaxy, providing information on their positions, distances, and other properties.

As of 2023, over 2,000 neutron stars are known, with more being discovered every year.

The typical mass of a neutron star is between 1 and 3 solar masses.

The typical radius of a neutron star is around 10 kilometers.

The typical rotation period of a neutron star is less than 1 second.

The strongest magnetic field observed in a neutron star is around 10^14 Tesla, which is billions of times stronger than the magnetic field of the Earth.

The fate of a neutron star depends on its mass. If it is less than the Chandrasekhar limit (about 1.4 solar masses), it will eventually cool down and become a white dwarf. If it is more massive, it will eventually collapse into a black hole.

PSR J0348+0432 is the most massive neutron star known to date, with a mass of about 2.01 solar masses.

PSR J1748-2446ad is the fastest-spinning neutron star known to date, with a rotation period of about 0.23 milliseconds.

PSR J0108-1431 is the most distant neutron star known to date, located about 4,000 light-years away.

Studying neutron stars provides insights into the properties of matter under extreme conditions, helps us understand the evolution of stars and galaxies, and they are potential sources of gravitational waves.