Designation system · 61 · 1725
Flamsteed Designation
A numbering scheme drawn from John Flamsteed's star catalogue, published posthumously in 1725, that labels the stars of each constellation with a number in order of increasing right ascension — so 61 Cygni is the sixty-first Flamsteed star of Cygnus. Flamsteed numbers name many stars that have no Bayer letter.
Highlights
- ›Number + constellation, by right ascension — e.g. 61 Cygni
Related catalogues & sources
Across the catalogue layer
Knowledge connections
- Associated withBayer Designation
- Associated withBayer Designation
- Associated withHipparcos Catalogue
Sources
The primary and reference sources this topic draws on.
- IAUInternational Astronomical Union
Official naming, definitions, constellation boundaries, and astronomical nomenclature.