Comets visible from the UK

This table lists the interval when comets are expected to be brighter than 12th magnitude and gives the period of visibility from the UK and elsewhere.

Comet			Max	From (elsewhere)	From (UK)	To (UK)		To (elsewhere)	Notes
2017 K2 (PanSTARRS)	 9 ?				2021 November	2024 February			Not continuously visible
2017 T2 (PanSTARRS)	 8	2019 July		2019 August	2020 September	2021 May	Not continuously visible
2019 N1 (ATLAS)		11	2020 December						2021 March
2019 U6 (Lemmon)	 6	2020 April		2020 July	2020 August
2020 F3 (NEOWISE)	 6	2020 April		2020 July	2020 August
2P/Encke		 6	2020 July						2020 August
88P/Howell		 9				2020 March	2020 June	2021 January
141P/Machholz		11	2020 November						2021 January
7P/Pons-Winnecke	 9				2021 March	2021 May	2021 August
8P/Tuttle		10	2021 September						2021 October
10P/Tempel		11	2021 April						2021 June
15P/Finlay		 9	2021 May		2021 July	2021 September
67P/Churyumov-Geras	 7	2021 June		2021 July	2022 April
104P/Kowal		 9				2021 November	2022 March
246P/NEAT		11	2021 February						2021 September
9P/Tempel		11	2022 January						2022 June
19P/Borrelly		 9	2021 September		2021 December	2022 May
45P/Honda-Mrkos-Pajd	 9										Not observable
116P/Wild		11				2022 January	2022 May
22P/Kopff		11	2022 February						2022 June
73P/Schwassmann-Wach	11	2022 August						2022 September
81P/Wild		10				2022 October	2023 March	2023 May
118P/Shoemaker-Levy	11				2022 October	2023 March
255P/Levy		 9	2022 June						2022 August
62P/Tuchinshan		 8				2023 October	2024 March
96P/Machholz		 2	2023 February						2023 March
103P/Hartley		 8				2023 August	2023 December
185P/Petriew		11	2023 June						2023 July
226P/Pigott-LINEAR-Kowa	10	2023 August		2023 December	2024 March
237P/LINEAR		10	2023 February		2023 April	2023 September
263P/Gibbs		 8				2022 October	2023 June
364P/PanSTARRS		 8				2023 February	2023 April	2023 June
12P/Pons-Brooks		 4				2023 December	2024 April	2024 August
1P/Halley		10				2060 October	2061 March
1P/Halley		 1				2061 July	2061 August
109P/Swift-Tuttle	 1				2126 January	2126 August