1.

Comet C/2024 G3 (ATLAS) passes perigee Comet C/2024 G3 (ATLAS) makes its closest approach to the Earth. Mon, 13 Jan 2025 (39 days away) in Sagittarius

2.

Comet C/2024 G3 (ATLAS) passes perihelion Comet C/2024 G3 (ATLAS) makes its closest approach to the Sun. Mon, 13 Jan 2025 (39 days away) in Sagittarius

3.

Comet 21P/Giacobini-Zinner passes perihelion Comet 21P/Giacobini-Zinner makes its closest approach to the Sun. Tue, 25 Mar 2025 (110 days away) in Pisces

4.

Comet 210P/Christensen passes perihelion Comet 210P/Christensen makes its closest approach to the Sun. Sat, 22 Nov 2025 (352 days away) in Libra

5.

Comet 240P/NEAT passes perihelion Comet 240P/NEAT makes its closest approach to the Sun. Fri, 19 Dec 2025 (379 days away) in Aries

6.

Comet 24P/Schaumasse passes perigee Comet 24P/Schaumasse makes its closest approach to the Earth. Sun, 04 Jan 2026 (395 days away) in Virgo

7.

Comet 24P/Schaumasse reaches peak brightness Comet 24P/Schaumasse is forecast to reach the brightest point in its 2026 apparition. Tue, 06 Jan 2026 (397 days away) in Virgo

8.

Comet 24P/Schaumasse passes perihelion Comet 24P/Schaumasse makes its closest approach to the Sun. Thu, 08 Jan 2026 (399 days away) in Virgo

9.

Comet 88P/Howell passes perihelion Comet 88P/Howell makes its closest approach to the Sun. Wed, 18 Mar 2026 (468 days away) in Capricornus

10.

Comet 141P/Machholz passes perihelion Comet 141P/Machholz makes its closest approach to the Sun. Wed, 22 Apr 2026 (503 days away) in Aries

11.

Comet 78P/Gehrels passes perihelion Comet 78P/Gehrels makes its closest approach to the Sun. Thu, 25 Jun 2026 (567 days away) in Taurus

12.

Comet 10P/Tempel reaches peak brightness Comet 10P/Tempel is forecast to reach the brightest point in its 2026 apparition. Sun, 02 Aug 2026 (605 days away) in Capricornus

13.

Comet 10P/Tempel passes perihelion Comet 10P/Tempel makes its closest approach to the Sun. Sun, 02 Aug 2026 (605 days away) in Capricornus

14.

Comet 10P/Tempel passes perigee Comet 10P/Tempel makes its closest approach to the Earth. Mon, 03 Aug 2026 (606 days away)

15.

Comet 69P/Taylor passes perihelion Comet 69P/Taylor makes its closest approach to the Sun. Thu, 12 Nov 2026 (707 days away) in Gemini

16.

Comet 161P/Hartley-IRAS passes perihelion Comet 161P/Hartley-IRAS makes its closest approach to the Sun. Sat, 28 Nov 2026 (723 days away) in Sagitta

17.

Comet 2P/Encke passes perigee Comet 2P/Encke makes its closest approach to the Earth. Wed, 03 Feb 2027 (790 days away) in Capricornus

18.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Wed, 10 Feb 2027 (797 days away) in Capricornus

19.

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 (993 days away) in Cancer

20.

Comet 45P/Honda-Mrkos-Pajdusakova passes perihelion Comet 45P/Honda-Mrkos-Pajdusakova makes its closest approach to the Sun. Tue, 31 Aug 2027 (999 days away) in Cancer