|Discovered by||Nell de Bréauté|
|Discovery date||December 29, 1823|
|1823; Great Comet of 1823, Comet De Bréauté-Pons|
|Orbital characteristics A|
|Epoch||1824 Feb 15.0(UT)|
|Last perihelion||1823 Dec 09.93400000|
The Great Comet of 1823, also designated C/1823 Y1 or Comet De Bréauté-Pons, was a bright comet visible in the last month of 1823 and the first months of 1824.
It was independently discovered by Nell de Bréauté at Dieppe on December 29, by Jean-Louis Pons on the morning of December 30, and by Wilhelm von Biela at Prague on the same morning. It was already visible to the naked eye when discovered: Pons initially thought he was seeing smoke from a chimney rising over a hill, but continued observing when he noticed it did not change appearance. He was later to note that the comet was, puzzlingly, more easily visible to the naked eye than through a telescope.
Pons was also the last astronomer to detect the comet, on April 1, 1824.