1.

Comet C/2021 A2 (NEOWISE) passes perihelion Comet C/2021 A2 (NEOWISE) makes its closest approach to the Sun. Fri, 22 Jan 2021 (1,211 days ago) in Vela

2.

Comet C/2021 D1 (SWAN) passes perihelion Comet C/2021 D1 (SWAN) makes its closest approach to the Sun. Sat, 27 Feb 2021 (1,175 days ago) in Pegasus

3.

Comet C/2020 R4 (ATLAS) passes perihelion Comet C/2020 R4 (ATLAS) makes its closest approach to the Sun. Tue, 02 Mar 2021 (1,172 days ago) in Aquarius

4.

Comet 10P/Tempel passes perihelion Comet 10P/Tempel makes its closest approach to the Sun. Tue, 23 Mar 2021 (1,151 days ago) in Aquarius

5.

Comet 15P/Finlay passes perigee Comet 15P/Finlay makes its closest approach to the Earth. Thu, 17 Jun 2021 (1,065 days ago) in Pisces

6.

Comet 15P/Finlay reaches peak brightness Comet 15P/Finlay is forecast to reach the brightest point in its 2021 apparition. Tue, 06 Jul 2021 (1,046 days ago) in Aries

7.

Comet C/2020 T2 (Palomar) passes perihelion Comet C/2020 T2 (Palomar) makes its closest approach to the Sun. Sat, 10 Jul 2021 (1,042 days ago) in Virgo

8.

Comet 15P/Finlay passes perihelion Comet 15P/Finlay makes its closest approach to the Sun. Tue, 13 Jul 2021 (1,039 days ago) in Taurus

9.

Comet 8P/Tuttle passes perihelion Comet 8P/Tuttle makes its closest approach to the Sun. Sat, 28 Aug 2021 (993 days ago) in Hydra

10.

Comet 8P/Tuttle reaches peak brightness Comet 8P/Tuttle is forecast to reach the brightest point in its 2021 apparition. Tue, 31 Aug 2021 (990 days ago) in Hydra

11.

Comet 4P/Faye passes perihelion Comet 4P/Faye makes its closest approach to the Sun. Thu, 09 Sep 2021 (981 days ago) in Taurus

12.

Comet 67P/Churyumov-Gerasimenko passes perihelion Comet 67P/Churyumov-Gerasimenko makes its closest approach to the Sun. Tue, 02 Nov 2021 (927 days ago) in Gemini

13.

Comet 67P/Churyumov-Gerasimenko reaches peak brightness Comet 67P/Churyumov-Gerasimenko is forecast to reach the brightest point in its 2021 apparition. Sun, 07 Nov 2021 (922 days ago) in Gemini

14.

Comet 67P/Churyumov-Gerasimenko passes perigee Comet 67P/Churyumov-Gerasimenko makes its closest approach to the Earth. Fri, 12 Nov 2021 (917 days ago) in Gemini

15.

Comet C/2021 A1 (Leonard) passes perigee Comet C/2021 A1 (Leonard) makes its closest approach to the Earth. Sun, 12 Dec 2021 (887 days ago) in Ophiuchus

16.

Comet C/2021 A1 (Leonard) passes perihelion Comet C/2021 A1 (Leonard) makes its closest approach to the Sun. Mon, 03 Jan 2022 (865 days ago)

17.

Comet C/2019 L3 (ATLAS) reaches peak brightness Comet C/2019 L3 (ATLAS) is forecast to reach the brightest point in its 2022 apparition. Wed, 05 Jan 2022 (863 days ago) in Gemini

18.

Comet C/2019 L3 (ATLAS) passes perihelion Comet C/2019 L3 (ATLAS) makes its closest approach to the Sun. Sun, 09 Jan 2022 (859 days ago) in Gemini

19.

Comet 104P/Kowal passes perihelion Comet 104P/Kowal makes its closest approach to the Sun. Tue, 11 Jan 2022 (857 days ago) in Cetus

20.

Comet 104P/Kowal reaches peak brightness Comet 104P/Kowal is forecast to reach the brightest point in its 2022 apparition. Tue, 18 Jan 2022 (850 days ago) in Cetus