The Catalogue of 2156 Stars is a book produced by the Royal Greenwich Observatory in 1849. It is a comprehensive listing of stars that were observed over a period of twelve years, from 1836 to 1847. The catalogue includes detailed information about each star, including its position in the sky, its brightness, and its spectral type. The book is organized in a systematic manner, making it easy for astronomers to use as a reference. It is an important...