Popular name for the New General Catalogue of Double Stars Within 120° of the North Pole by R. G. Aitken, published in 1932, containing measurements of 17 180 double stars. It succeeded the General Catalogue of Double Stars published in 1906 by the American observer Sherburne Wesley Burnham (1838–1921). Double stars are often referred to by their ADS number as listed in Aitken’s catalogue.