Compilation for the first version, AGK1, was started in 1867, directed by Friedrich Argelander and published between 1890 (three sections from the observatories at Oslo, Helsinki, and Neuchâtel) and 1924 (final section: Algiers observatory), listing 200 000 stars down to ninth magnitude.
The first version, AGK1, was compiled in 1867 under the direction of Friedrich Argelander and published between 1890 (three sections from observatories in Oslo, Helsinki, and Neuchâtel) and 1924 (the final section: Algiers observatory), containing a catalog of 200,000 stars down to the ninth magnitude.