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A star catalogue is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones.
This database is based on the electronic version of the SAO catalog from the Astronomical Data Center, which is itself based on an original binary version of the Smithsonian Astrophysical Observatory Star Catalog (SAO, SAO Staff 1966).
OR, search for a star by its exact catalog number (use a * to indicate a degrees sign):
An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of discovery. Astronomical catalogs are usually the result of an astronomical survey of some kind.
Guide Star Finder: A Web tool aimed at searching for suitable adaptive optics guide stars, either for single objects as for a list of observing targets. The tool is based on the USNO-SA2.0 catalogue. Work is in progress to use USNO-B catalogue as an option.
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue, created by Smithsonian Institution, a research institute. It was published by the Smithsonian Astrophysical Observatory in 1966 and contains 258,997 stars.
The BSC5P database table contains data derived from the Bright Star Catalog, 5th Edition, preliminary, which is widely used as a source of basic astronomical and astrophysical data for stars brighter than magnitude 6.5.
These files contain the entire SAO catalog of 258,996 stars, including B1950 positions, proper motions, magnitudes, and, usually, spectral types in a locally-developed binary format described below.
Star catalog, list of stars, usually according to position and magnitude (brightness) and, in some cases, other properties (e.g., spectral type) as well. Numerous catalogs and star atlases have been made, some of fundamental importance to stellar astronomy.
Each of these designations comes from a different star catalogue, all of which have their own way of labelling stars. And that list merely skims the surface – if you use a program such as Guide v9.1 to search for double stars, it has over 100 catalogues to choose from. So why do you need all these? The short answer is that you don’t.