Flamsteed designation

(Flamsteed used a telescope,[1] and the catalog also includes some stars which are relatively bright but not necessarily visible with the naked eye.)

[2][3] The final version of Flamsteed's catalogue published in 1725[4] after his death omitted the numerical designations altogether.

The numbers now in use were assigned by the French astronomer, Joseph Jérôme de Lalande and appeared in his 1783 almanac, Éphémérides des mouvemens célestes which contained a revised edition of Flamsteed's catalogue.

Examples of well-known stars that are usually referred to by their Flamsteed numbers include 51 Pegasi, and 61 Cygni.

Similarly, Flamsteed-like designations assigned by other astronomers (for example, Hevelius) are no longer in general use.