21.

Comet C/2021 T4 (Lemmon) passes perihelion Comet C/2021 T4 (Lemmon) makes its closest approach to the Sun. Mon, 31 Jul 2023 (281 days ago) in Norma

22.

Comet C/2023 E1 (ATLAS) passes perigee Comet C/2023 E1 (ATLAS) makes its closest approach to the Earth. Fri, 18 Aug 2023 (263 days ago) in Cygnus

23.

Comet C/2023 P1 (Nishimura) passes perigee Comet C/2023 P1 (Nishimura) makes its closest approach to the Earth. Tue, 12 Sep 2023 (238 days ago) in Leo

24.

Comet C/2023 P1 (Nishimura) passes perihelion Comet C/2023 P1 (Nishimura) makes its closest approach to the Sun. Sun, 17 Sep 2023 (233 days ago) in Virgo

25.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Sun, 22 Oct 2023 (198 days ago) in Virgo

26.

Comet C/2023 H2 (Lemmon) passes perihelion Comet C/2023 H2 (Lemmon) makes its closest approach to the Sun. Sun, 29 Oct 2023 (191 days ago)

27.

Comet C/2023 H2 (Lemmon) passes perigee Comet C/2023 H2 (Lemmon) makes its closest approach to the Earth. Fri, 10 Nov 2023 (179 days ago) in Hercules

28.

Comet C/2023 H2 (Lemmon) reaches peak brightness Comet C/2023 H2 (Lemmon) is forecast to reach the brightest point in its 2023 apparition. Fri, 10 Nov 2023 (179 days ago) in Hercules

29.

Comet 62P/Tsuchinshan passes perihelion Comet 62P/Tsuchinshan makes its closest approach to the Sun. Mon, 25 Dec 2023 (134 days ago) in Leo

30.

Comet 62P/Tsuchinshan reaches peak brightness Comet 62P/Tsuchinshan is forecast to reach the brightest point in its 2023 apparition. Sun, 31 Dec 2023 (128 days ago) in Leo

31.

Comet C/2023 S3 (Lemmon) passes perihelion Comet C/2023 S3 (Lemmon) makes its closest approach to the Sun. Fri, 19 Jan 2024 (109 days ago) in Microscopium

32.

Comet 144P/Kushida passes perihelion Comet 144P/Kushida makes its closest approach to the Sun. Thu, 25 Jan 2024 (103 days ago) in Taurus

33.

Comet C/2021 S3 (PANSTARRS) passes perihelion Comet C/2021 S3 (PANSTARRS) makes its closest approach to the Sun. Wed, 14 Feb 2024 (83 days ago) in Ophiuchus

34.

Comet 12P/Pons-Brooks reaches peak brightness Comet 12P/Pons-Brooks is forecast to reach the brightest point in its 2024 apparition. Sun, 21 Apr 2024 (16 days ago) in Taurus

35.

Comet 12P/Pons-Brooks passes perihelion Comet 12P/Pons-Brooks makes its closest approach to the Sun. Sun, 21 Apr 2024 (16 days ago) in Taurus

36.

Comet 479P/Elenin passes perihelion Comet 479P/Elenin makes its closest approach to the Sun. Sun, 05 May 2024 (2 days ago) in Hydra

37.

Comet 46P/Wirtanen passes perihelion Comet 46P/Wirtanen makes its closest approach to the Sun. Sun, 19 May 2024 (12 days away) in Taurus

38.

Comet 154P/Brewington passes perihelion Comet 154P/Brewington makes its closest approach to the Sun. Tue, 11 Jun 2024 (35 days away) in Aries

39.

Comet 13P/Olbers passes perihelion Comet 13P/Olbers makes its closest approach to the Sun. Sun, 30 Jun 2024 (54 days away) in Lynx

40.

Comet 13P/Olbers reaches peak brightness Comet 13P/Olbers is forecast to reach the brightest point in its 2024 apparition. Mon, 01 Jul 2024 (55 days away) in Lynx