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Yoshida's Comet Catalog Magnitude graph for 2007-2009 Enigmatic Comet Holmes by Jeff Bryant, The Wolfram Demonstrations Project. Evolution of Comet 17P/Holmes
Cloud Comet Lights Up in the Outer Solar System. Sky & Telescope. 22 June 2021 [14 April 2022]. (原始内容存档于2022-11-29). Dvorsky, George. Mega Comet Arriving