1.

Close approach of the Moon and Uranus The Moon and Uranus pass close to each other. Sun, 01 Jan 2023 at 16:45 EDT (563 days ago) in Aries

2.

Lunar occultation of Uranus The Moon will pass in front of Uranus, creating a lunar occultation visible from countries and territories including Greenland, Russia, Canada and Sweden amongst others. Sun, 01 Jan 2023 at 16:45 EDT (563 days ago) in Aries

3.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Mon, 02 Jan 2023 at 15:04 EDT (562 days ago) in Sagittarius

4.

The cluster Messier 41 is well placed The open star cluster M41 (NGC 2287; mag 4.5) in Canis Major culminates at around midnight local time. Mon, 02 Jan 2023 (562 days ago) in Canis Major

5.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 32'. Tue, 03 Jan 2023 at 14:36 EDT (561 days ago) in Taurus

6.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Tue, 03 Jan 2023 at 14:51 EDT (561 days ago) in Taurus

7.

Lunar occultation of Mars The Moon will pass in front of Mars, creating a lunar occultation visible from Africa, Maldives and British Indian Ocean Territory. Tue, 03 Jan 2023 at 14:51 EDT (561 days ago) in Taurus

8.

Quadrantid meteor shower 2023 The Quadrantid meteor shower reaches its peak. Tue, 03 Jan 2023 (560 days ago) in Bootes

9.

The Earth at perihelion The Earth reaches its closest point to the Sun. Wed, 04 Jan 2023 at 11:17 EDT (560 days ago) in Pisces

10.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 06 Jan 2023 at 18:07 EDT (558 days ago) in Gemini

11.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Fri, 06 Jan 2023 at 22:55 EDT (558 days ago) in Gemini

12.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Sat, 07 Jan 2023 at 07:53 EDT (557 days ago) in Sagittarius

13.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Sun, 08 Jan 2023 at 04:19 EDT (556 days ago) in Cancer

14.

Comet C/2022 E3 (ZTF) passes perihelion Comet C/2022 E3 (ZTF) makes its closest approach to the Sun. Thu, 12 Jan 2023 (552 days ago)

15.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Thu, 12 Jan 2023 at 15:54 EDT (552 days ago) in Taurus

16.

Comet C/2022 U2 (ATLAS) passes perihelion Comet C/2022 U2 (ATLAS) makes its closest approach to the Sun. Sat, 14 Jan 2023 (550 days ago) in Cassiopeia

17.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Sat, 14 Jan 2023 at 21:10 EDT (550 days ago) in Virgo

18.

The cluster Messier 47 is well placed The open star cluster M47 (NGC 2422; mag 4.4) in Puppis culminates at around midnight local time. Sun, 15 Jan 2023 (549 days ago) in Puppis

19.

NGC 2403 is well placed NGC 2403 (mag 8.9), a spiral galaxy in Camelopardalis culminates at around midnight local time. Sun, 15 Jan 2023 (549 days ago) in Camelopardalis

20.

Asteroid 2 Pallas at opposition Asteroid 2 Pallas makes closest approach to the Earth. Sun, 15 Jan 2023 at 23:46 EDT (548 days ago) in Canis Major