Comets visible from the UK

This table lists the interval when comets are expected to be brighter than 13 - 14th magnitude and gives the period of visibility from the UK.

Comet			Max	From (elsewhere)	From (UK)	To (UK)		To (elsewhere)	Notes
2009 P1 (Garradd)	 7	2011 January		2011 June	2012 June
							2012 October	2012 December
2006 S3 (LONEOS)	12	2011 March		2011 June	2011 August
							2012 May	2012 June	2013 July
48P/Johnson		12	2011 April						2012 January	Southern hemisphere
78P/Gehrels		11	2011 May		2011 July	2012 March	2012 July
45P/Honda-Mrkos-Pajdus	 6	2011 July		2011 September	2011 October	2011 November
2006 T1 (P/Levy)	 ?				2011 December	2012 February	2012 May
73P/Schwassmann-Wachma	Vb	2011 September						2011 November
49P/Arend-Rigaux	14				2011 October	2011 December
21P/Giacobini-Zinner	11	2011 October						2012 May	Poor elongation
29P/Schwassmann-Wachma	Vb	2011 December						2012 August
185P/Petriew		11	2012 May		2012 July	2012 September	2012 November
96P/Machholz		 2	2012 June						2012 August	Poor elongation
1994 X1 (P/McNaught-Ru	11				2012 August	2013 February	2013 March
2011 F1 (LINEAR)	10	2012 July						2012 September	Southern Hemisphere	
				2013 February						2013 November	Southern Hemisphere
2011 L4 (PanSTARRS)	13	2012 August						2012 October	Southern Hemisphere
			 1	2013 January						2013 March	Southern Hemisphere
			 1				2013 March	2013 September
26P/Grigg-Skjellerup    14	2013 June						2013 July	Southern Hemisphere
29P/Schwassmann-Wachma	Vb	2012 December						2013 September
102P/Shoemaker		13	2013 June		2013 July	2013 December
154P/Brewington		10	2013 June		2013 August	2014 April
2P/Encke		 6				2013 August	2013 November	2014 February	Poor elongation post
P/2004 CB		11	2014
P/2000 G1		10	2016
45P/Honda-Mrkos-Pjdus	 6	2017
41P/Tuttle-Giacobini-	 7	2018
46P/Wirtanen		 3				2018 August	2019 May
P/Pons-Brooks		 4				2023 November	2024 April
1P/Halley		10				2060 October	2061 March
			 1				2061 July	2061 August
109P/Swift-Tuttle	 1				2126 January	2126 August