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 2024 E1 (Wierzchos) 5 2025 October 2026 April Not continuously visible 2024 G3 (ATLAS) -4 2024 November 2025 March 2025 A6 (Lemmon) 10 2025 October 2025 November 2025 F2 (SWAN) 5 2025 April 2025 April 2025 June 24P/Schaumasse 8 2025 October 2026 April 10P/Tempel 8 2026 March 2026 August 2026 November 69P/Taylor 12 2026 November 2027 February 78P/Gehrels 11 2026 June 2026 August 2026 November 88P/Howell 10 2026 January 2026 June 161P/Hartley-IRAS 10 2026 August 2026 September 2027 January 169P/NEAT 12 2026 August 21P/Giacobini-Zinner 11 Not observable in 2025 289P/Blanpain 11 Not observable in 2025 414P/STEREO 11 2025 August 2025 September 88P/Howell 9 2026 February 2026 July 2026 July 7P/Pons-Winnecke 11 2027 July 2027 September 104P/Kowal 10 2027 July 2028 January 19P/Borrelly 6 2028 July 2028 November 2029 April 22P/Kopff 6 2028 February 2028 November 1P/Halley 10 2060 October 2061 March 1P/Halley 1 2061 July 2061 August 109P/Swift-Tuttle 1 2126 January 2126 August