1.

Comet C/2025 R3 (PANSTARRS) passes perihelion Comet C/2025 R3 (PANSTARRS) makes its closest approach to the Sun. Sun, 19 Apr 2026 (7 days away) in Pisces

2.

Comet 141P/Machholz passes perihelion Comet 141P/Machholz makes its closest approach to the Sun. Thu, 23 Apr 2026 (11 days away) in Aries

3.

Comet C/2025 R3 (PANSTARRS) passes perigee Comet C/2025 R3 (PANSTARRS) makes its closest approach to the Earth. Sun, 26 Apr 2026 (14 days away) in Cetus

4.

Comet 78P/Gehrels passes perihelion Comet 78P/Gehrels makes its closest approach to the Sun. Thu, 25 Jun 2026 (74 days away) in Taurus

5.

Comet 10P/Tempel passes perihelion Comet 10P/Tempel makes its closest approach to the Sun. Sun, 02 Aug 2026 (112 days away) in Capricornus

6.

Comet 10P/Tempel reaches peak brightness Comet 10P/Tempel is forecast to reach the brightest point in its 2026 apparition. Mon, 03 Aug 2026 (113 days away)

7.

Comet 10P/Tempel passes perigee Comet 10P/Tempel makes its closest approach to the Earth. Mon, 03 Aug 2026 (113 days away)

8.

Comet 69P/Taylor passes perihelion Comet 69P/Taylor makes its closest approach to the Sun. Thu, 12 Nov 2026 (214 days away) in Gemini

9.

Comet 161P/Hartley-IRAS passes perihelion Comet 161P/Hartley-IRAS makes its closest approach to the Sun. Fri, 27 Nov 2026 (229 days away) in Sagitta

10.

Comet 2P/Encke passes perigee Comet 2P/Encke makes its closest approach to the Earth. Wed, 03 Feb 2027 (297 days away) in Capricornus

11.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Wed, 10 Feb 2027 (304 days away) in Capricornus

12.

Comet 45P/Honda-Mrkos-Pajdusakova reaches peak brightness Comet 45P/Honda-Mrkos-Pajdusakova is forecast to reach the brightest point in its 2027 apparition. Wed, 25 Aug 2027 (500 days away) in Cancer

13.

Comet 45P/Honda-Mrkos-Pajdusakova passes perihelion Comet 45P/Honda-Mrkos-Pajdusakova makes its closest approach to the Sun. Tue, 31 Aug 2027 (506 days away) in Cancer

14.

Comet 104P/Kowal passes perihelion Comet 104P/Kowal makes its closest approach to the Sun. Tue, 12 Oct 2027 (548 days away) in Cancer

15.

Comet 73P/Schwassmann-Wachmann passes perihelion Comet 73P/Schwassmann-Wachmann makes its closest approach to the Sun. Sun, 19 Dec 2027 (616 days away) in Sagittarius

16.

Comet 15P/Finlay passes perihelion Comet 15P/Finlay makes its closest approach to the Sun. Wed, 09 Feb 2028 (668 days away) in Aquarius

17.

Comet 41P/Tuttle-Giacobini-Kresak passes perihelion Comet 41P/Tuttle-Giacobini-Kresak makes its closest approach to the Sun. Tue, 15 Feb 2028 (674 days away)

18.

Comet 67P/Churyumov-Gerasimenko passes perihelion Comet 67P/Churyumov-Gerasimenko makes its closest approach to the Sun. Sun, 09 Apr 2028 (728 days away) in Aries

19.

Comet 96P/Machholz passes perihelion Comet 96P/Machholz makes its closest approach to the Sun. Thu, 11 May 2028 (760 days away) in Taurus

20.

Comet 22P/Kopff passes perihelion Comet 22P/Kopff makes its closest approach to the Sun. Sun, 02 Jul 2028 (812 days away) in Sagittarius