72P/Denning–Fujikawa is a periodic comet discovered on 4 October 1881 by William Frederick Denning. The comet was not seen at another apparition until recovered by Shigehisa Fujikawa in 1978. From 29 December 1978 until 17 June 2014, the comet was lost. On 17 June 2014 the comet was recovered by Hidetaka Sato at apparent magnitude 16 when it was 50 degrees from the Sun. The comet came to perihelion in June 2023, and will next come to perihelion in May 2032.
72P/Denning–Fujikawa is a periodic comet discovered on 4 October 1881 by William Frederick Denning. The comet was not seen at another apparition until recovered by Shigehisa Fujikawa in 1978. From 29 December 1978 until 17 June 2014, the comet was lost. On 17 June 2014 the comet was recovered by Hidetaka Sato at apparent magnitude 16 when it was 50 degrees from the Sun. The comet came to perihelion in June 2023, and will next come to perihelion in May 2032.
There were failures to recover the comet during perihelion even in cases where it is estimated that it should have been around magnitude 8, such as in 1960 and 1969, and it has been suggested since then it is only occasionally active. This has resulted in it being classified as a transitional comet. The comet was seen in 1978 at around magnitude 10. The comet was missed in 1987, 1996, and 2005 as it is now expected that the comet only brightened to about magnitude 13–14 during those passages.
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