The Fourth Fundamental Catalogue ( FK4 ) was published in 1963 .
The Fourth Fundamental Catalogue ( FK4 ) was contained 1,535 stars in various equinoxes from 1950.0 to 1975.0 .
The Fourth Fundamental Catalogue ( FK4 ) was published in 1963 , and contained 1,535 stars in various equinoxes from 1950.0 to 1975.0 .