1.

Comet 21P/Giacobini-Zinner passes perihelion Comet 21P/Giacobini-Zinner makes its closest approach to the Sun. Thu, 13 Sep 2018 (2,049 days ago) in Auriga

2.

Comet 38P/Stephan-Oterma passes perihelion Comet 38P/Stephan-Oterma makes its closest approach to the Sun. Mon, 12 Nov 2018 (1,989 days ago) in Gemini

3.

Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) passes perigee Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) makes its closest approach to the Earth. Mon, 26 Nov 2018 (1,975 days ago)

4.

Comet C/2018 L2 (ATLAS) passes perihelion Comet C/2018 L2 (ATLAS) makes its closest approach to the Sun. Fri, 30 Nov 2018 (1,971 days ago) in Ophiuchus

5.

Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) passes perihelion Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) makes its closest approach to the Sun. Mon, 03 Dec 2018 (1,968 days ago) in Ophiuchus

6.

Comet 46P/Wirtanen passes perihelion Comet 46P/Wirtanen makes its closest approach to the Sun. Tue, 11 Dec 2018 (1,960 days ago) in Taurus

7.

Comet 46P/Wirtanen reaches peak brightness Comet 46P/Wirtanen is forecast to reach the brightest point in its 2018 apparition. Thu, 13 Dec 2018 (1,958 days ago) in Taurus

8.

Comet 46P/Wirtanen passes perigee Comet 46P/Wirtanen makes its closest approach to the Earth. Thu, 13 Dec 2018 (1,958 days ago) in Taurus

9.

Comet C/2018 Y1 (Iwamoto) passes perihelion Comet C/2018 Y1 (Iwamoto) makes its closest approach to the Sun. Mon, 04 Feb 2019 (1,905 days ago) in Virgo

10.

Comet C/2018 Y1 (Iwamoto) passes perigee Comet C/2018 Y1 (Iwamoto) makes its closest approach to the Earth. Mon, 11 Feb 2019 (1,898 days ago) in Leo

11.

Comet C/2018 Y1 (Iwamoto) reaches peak brightness Comet C/2018 Y1 (Iwamoto) is forecast to reach the brightest point in its 2019 apparition. Mon, 11 Feb 2019 (1,898 days ago) in Leo

12.

Comet C/2018 W1 (Catalina) passes perihelion Comet C/2018 W1 (Catalina) makes its closest approach to the Sun. Sun, 12 May 2019 (1,808 days ago) in Eridanus

13.

Comet C/2018 R3 (Lemmon) passes perihelion Comet C/2018 R3 (Lemmon) makes its closest approach to the Sun. Sat, 08 Jun 2019 (1,781 days ago) in Camelopardalis

14.

Comet 168P/Hergenrother passes perihelion Comet 168P/Hergenrother makes its closest approach to the Sun. Fri, 09 Aug 2019 (1,719 days ago) in Taurus

15.

Comet C/2018 W2 (Africano) passes perihelion Comet C/2018 W2 (Africano) makes its closest approach to the Sun. Thu, 05 Sep 2019 (1,692 days ago) in Perseus

16.

Comet 260P/McNaught passes perihelion Comet 260P/McNaught makes its closest approach to the Sun. Wed, 11 Sep 2019 (1,686 days ago) in Aries

17.

Comet C/2018 W2 (Africano) reaches peak brightness Comet C/2018 W2 (Africano) is forecast to reach the brightest point in its 2019 apparition. Thu, 26 Sep 2019 (1,671 days ago) in Pegasus

18.

Comet C/2018 W2 (Africano) passes perigee Comet C/2018 W2 (Africano) makes its closest approach to the Earth. Fri, 27 Sep 2019 (1,670 days ago) in Pegasus

19.

Comet C/2018 N2 (ASASSN) passes perihelion Comet C/2018 N2 (ASASSN) makes its closest approach to the Sun. Mon, 11 Nov 2019 (1,625 days ago) in Andromeda

20.

Comet 2I/Borisov passes perihelion Comet 2I/Borisov makes its closest approach to the Sun. Sun, 08 Dec 2019 (1,598 days ago) in Crater