Editing Giuseppe Piazzi (section)

===Star cataloguing===

He supervised the compilation of the Palermo Catalogue of stars, containing 7,646 star entries with unprecedented precision,<ref>[http://www.daviddarling.info/encyclopedia/P/Piazzi.html DavidDarling.com: Piazzi, Giuseppe (1746–1826)]</ref> including the star names "[[Mu Cephei|Garnet Star]]" from [[William Herschel|Herschel]], and the [[Sualocin and Rotanev|original]] [[Rotanev]] and [[Sualocin]]. The work to observe the sky methodically. The catalogue wasn't finished for first edition publication until 1803, with a second edition in 1814.{{sfn|Fox|1913}}

Spurred by the success discovering Ceres (see below), and in the line of his catalogue program, Piazzi studied the proper motions of stars to find parallax measurement candidates. One of them, [[61 Cygni]], was specially appointed as a good candidate for measuring a parallax, which was later performed by [[Friedrich Wilhelm Bessel]].<ref>[http://www.astropa.unipa.it/HISTORY/history.htm On the history of the Palermo Astronomical Observatory] by Giorgia Foderà Serio</ref> The star system [[61 Cygni]] is sometimes still called variously ''Piazzi's Flying Star'' and ''Bessel's Star''.