Astronomische Gesellschaft Catalog (English)

…Other catalogs that have the characteristics of basic star catalogs include the BGC Catalogue (1937) by Lewis Boss (1846-1912), which contains 33,342 stars, and the N-30, which contains 5,268 stars. The AGK Catalogue (short for Astronomische Gesellschaft Catalog), which is a representative catalog compiled by meridian circular observations of even slightly faint stars based on the stars in the basic star catalog, began in 1869 when 15 observatories shared and observed the stars in the Bonn Catalogue by declination band. The first edition of the AGK1 star catalog was published between 1890 and 1910, and contained 144,000 stars. Later, the latitude band was expanded and the accuracy of proper motion was improved, and the third edition, the AGK3 star catalog, was compiled in the 1960s. In the end, 200,000 stars were listed in accordance with FK4. …

*Some of the terminology explanations that refer to the "Astronomische Gesellschaft Catalog" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ほかにボスLewis Boss(1846‐1912)の3万3342星を収録したBGCカタログ(1937)や5268星を収録したN‐30なども基本星表の性格をもつ。　基本星表の星を基準にやや暗い星までを子午環観測して編んだカタログの代表的なものはAGK星表(Astronomische Gesellschaft Katalogの略)で，1869年に15の天文台がボン掃天星表の星を赤緯帯にくぎって分担，観測したことに始まる。初版AGK1星表は1890‐1910年に出版，14.4万の星を記載，のちに緯度帯を拡張し，また固有運動の精度を向上して1960年代には第3版AGK3星表が編纂（へんさん）され，結局20万の星がFK4に準拠して記載された。…

※「Astronomische Gesellschaft Katalog」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報