Calendar of Astronomical Events

Astronomical Calendar for 2023

January
1	Conjunction of Venus and Pluto Close approach of the Moon and Uranus Lunar occultation of Uranus
2	The cluster Messier 41 is well placed
3	Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars
4	Quadrantid meteor shower 2023 The Earth at perihelion
6	Full Moon
7	Mercury at inferior solar conjunction
12	Comet C/2022 E3 (ZTF) passes perihelion Mars ends retrograde motion
14	Comet C/2022 U2 (ATLAS) passes perihelion Moon at Last Quarter
15	The cluster Messier 47 is well placed NGC 2403 is well placed Asteroid 2 Pallas at opposition
17	Lunar occultation of Delta Scorpii The cluster NGC 2451 is well placed
18	134340 Pluto at solar conjunction
19	γ-Ursae Minorid meteor shower 2023
20	Conjunction of the Moon and Mercury The cluster NGC 2516 is well placed
21	New Moon
22	Conjunction of Venus and Saturn Close approach of Venus and Saturn Uranus ends retrograde motion
23	Conjunction of the Moon and Saturn Conjunction of the Moon and Venus Comet 71P/Clark passes perihelion The cluster NGC 2547 is well placed
24	Mercury at dichotomy
25	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
26	Asteroid 6 Hebe at opposition
28	Moon at First Quarter Close approach of the Moon and Uranus Lunar occultation of Uranus
23	Mercury at highest altitude in morning sky
30	Mercury at greatest elongation west Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars
31	Comet 96P/Machholz passes perigee Comet 96P/Machholz passes perihelion The Beehive cluster is well placed The Omicron Velorum cluster is well placed The cluster IC 2395 is well placed

February
1	Comet C/2022 E3 (ZTF) passes perigee Comet C/2022 E3 (ZTF) reaches peak brightness
5	Full Moon
8	α-Centaurid meteor shower 2023 NGC 2808 is well placed
10	Conjunction of Mercury and Pluto
13	Moon at Last Quarter
14	Lunar occultation of Delta Scorpii
15	Conjunction of Venus and Neptune
16	Saturn at solar conjunction Lunar occultation of Sigma Sagittarii
18	Comet C/2022 A2 (PANSTARRS) passes perihelion Conjunction of the Moon and Mercury
19	Messier 81 is well placed
20	New Moon
21	The cluster NGC 3114 is well placed
22	Conjunction of the Moon and Venus Close approach of the Moon and Venus Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Lunar occultation of Jupiter
25	Close approach of the Moon and Uranus
27	Moon at First Quarter Asteroid 40 Harmonia at opposition The cluster IC 2581 is well placed Close approach of the Moon and Mars Lunar occultation of Mars Conjunction of the Moon and Mars

March
2	Close approach of Venus and Jupiter Conjunction of Mercury and Saturn Conjunction of Venus and Jupiter
3	The Theta Carinae cluster is well placed
7	Full Moon
9	The Wishing Well cluster is well placed
13	Lunar occultation of Delta Scorpii
14	Moon at Last Quarter
15	γ-Normid meteor shower 2023 Neptune at solar conjunction
17	Mercury at superior solar conjunction
19	Conjunction of the Moon and Saturn
20	March equinox
21	1 Ceres at opposition New Moon
22	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
24	Conjunction of the Moon and Venus Close approach of the Moon and Venus Lunar occultation of Venus
28	Close approach of the Moon and Mars Conjunction of the Moon and Mars Moon at First Quarter
29	136472 Makemake at opposition
31	Conjunction of Venus and Uranus

April
3	The Sombrero Galaxy is well placed
5	Messier 94 is well placed
6	The Jewel Box cluster is well placed Full Moon
8	Mercury at dichotomy
9	Lunar occultation of Delta Scorpii
11	Mercury at highest altitude in evening sky Mercury at greatest elongation east Jupiter at solar conjunction
13	Moon at Last Quarter
14	Centaurus A is well placed 136199 Eris at solar conjunction
15	Omega Centauri is well placed The Whirlpool Galaxy is well placed Conjunction of the Moon and Saturn
16	Close approach of the Moon and Saturn
17	Messier 83 is well placed
19	Messier 3 is well placed
20	New Moon Hybrid solar eclipse 136108 Haumea at opposition
21	Conjunction of the Moon and Mercury
23	Lyrid meteor shower 2023 Close approach of the Moon and Venus Conjunction of the Moon and Venus
24	Messier 101 is well placed π-Puppid meteor shower 2023
25	Conjunction of the Moon and Mars Close approach of the Moon and Mars
27	Moon at First Quarter
30	Asteroid 7 Iris at opposition

May
1	Mercury at inferior solar conjunction
5	Penumbral lunar eclipse Full Moon
6	η-Aquariid meteor shower 2023 Lunar occultation of Delta Scorpii
8	Comet C/2020 V2 (ZTF) passes perihelion
9	η-Lyrid meteor shower 2023 Uranus at solar conjunction
12	Moon at Last Quarter
13	Messier 5 is well placed Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
17	Close approach of the Moon and Jupiter Lunar occultation of Jupiter Conjunction of the Moon and Jupiter Conjunction of the Moon and Mercury
19	New Moon
23	Conjunction of the Moon and Venus Close approach of the Moon and Venus
24	Conjunction of the Moon and Mars Close approach of the Moon and Mars
27	Moon at First Quarter
29	Messier 4 is well placed Mercury at greatest elongation west
8	Venus at highest altitude in evening sky

June
5	Mercury at highest altitude in morning sky
2	Close approach of Mars and M44
3	The Great Globular Cluster in Hercules is well placed Lunar occultation of Delta Scorpii
4	Messier 12 is well placed
3	Venus at dichotomy Full Moon
4	Conjunction of Mercury and Uranus Mercury at dichotomy Venus at greatest elongation east
6	Asteroid 11 Parthenope at opposition
7	Messier 10 is well placed
8	Messier 62 is well placed
9	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
10	Moon at Last Quarter
11	Daytime Arietid meteor shower 2023
12	Messier 92 is well placed
13	Close approach of Venus and M44
14	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
16	Conjunction of the Moon and Mercury
17	NGC 6388 is well placed Saturn enters retrograde motion
18	The Butterfly cluster is well placed NGC 6397 is well placed New Moon
19	The cluster IC 4665 is well placed
21	The Ptolemy cluster is well placed June solstice Conjunction of the Moon and Venus Close approach of the Moon and Venus
22	Conjunction of the Moon and Mars Close approach of the Moon and Mars
24	The Lagoon Nebula is well placed
25	NGC 6541 is well placed
26	Moon at First Quarter
27	June Bootid meteor shower 2023
30	The cluster NGC 6633 is well placed Comet C/2023 E1 (ATLAS) passes perihelion Neptune enters retrograde motion Lunar occultation of Delta Scorpii

July
1	Mercury at superior solar conjunction Close approach of Venus and Mars
2	Messier 22 is well placed
3	The cluster IC 4756 is well placed Full Moon
6	The Earth at aphelion Conjunction of the Moon and Saturn
7	Close approach of the Moon and Saturn Asteroid 15 Eunomia at opposition
9	Venus at greatest brightness Moon at Last Quarter
11	The Great Peacock Globular Cluster is well placed Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
16	Comet C/2023 E1 (ATLAS) reaches peak brightness
17	New Moon
18	Messier 55 is well placed
19	Conjunction of the Moon and Mercury
20	Conjunction of the Moon and Venus Comet C/2021 T4 (Lemmon) passes perigee Comet C/2021 T4 (Lemmon) reaches peak brightness
21	Conjunction of the Moon and Mars Close approach of the Moon and Mars 134340 Pluto at opposition
25	Moon at First Quarter
26	Conjunction of Venus and Mercury
28	Lunar occultation of Delta Scorpii
29	Piscis Austrinid meteor shower 2023
30	Southern δ-Aquariid meteor shower 2023 α-Capricornid meteor shower 2023
31	Comet C/2021 T4 (Lemmon) passes perihelion
29	Mercury at highest altitude in evening sky

August
1	Full Moon
3	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
8	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter Moon at Last Quarter
9	Mercury at dichotomy Close approach of the Moon and M45 Mercury at greatest elongation east
10	Asteroid 10 Hygiea at opposition
13	Perseid meteor shower 2023 Venus at inferior solar conjunction
15	Messier 15 is well placed
16	Messier 2 is well placed New Moon
17	Comet C/2023 E1 (ATLAS) passes perigee
18	Conjunction of the Moon and Mercury κ-Cygnid meteor shower 2023 Conjunction of the Moon and Mars Close approach of the Moon and Mars
24	Moon at First Quarter Lunar occultation of Delta Scorpii Lunar occultation of Antares
26	Asteroid 8 Flora at opposition
27	Saturn at opposition
28	Uranus enters retrograde motion
30	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn Blue Moon

September
1	Lunar occultation of Neptune Aurigid meteor shower 2023
4	Jupiter enters retrograde motion Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
5	Close approach of the Moon and M45
6	Mercury at inferior solar conjunction Moon at Last Quarter
7	Lunar occultation of Beta Tauri
10	September ε-Perseid meteor shower 2023
12	Comet C/2023 P1 (Nishimura) passes perigee
13	Conjunction of the Moon and Mercury
14	New Moon
16	Conjunction of the Moon and Mars
17	Comet C/2023 P1 (Nishimura) passes perihelion
18	Venus at greatest brightness
19	Neptune at opposition
21	Lunar occultation of Antares
22	Mercury at greatest elongation west
23	Mercury at highest altitude in morning sky
22	Mercury at dichotomy Moon at First Quarter
23	September equinox
26	NGC 55 is well placed Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
28	47 Tuc is well placed Daytime Sextantid meteor shower 2023
29	Full Moon

October
1	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
2	Asteroid 29 Amphitrite at opposition 136472 Makemake at solar conjunction
3	The Andromeda Galaxy is well placed Close approach of the Moon and M45
4	NGC 253 is well placed Lunar occultation of Beta Tauri
6	The Small Magellanic Cloud is well placed NGC 300 is well placed October Camelopardalid meteor shower 2023 Moon at Last Quarter
8	NGC 362 is well placed
9	Draconid meteor shower 2023
10	Conjunction of the Moon and Venus Close approach of the Moon and Venus Southern Taurid meteor shower 2023
11	δ-Aurigid meteor shower 2023
14	New Moon Annular solar eclipse
16	The Triangulum Galaxy is well placed
18	136199 Eris at opposition Lunar occultation of Antares
19	ε-Geminid meteor shower 2023
20	Mercury at superior solar conjunction
22	Orionid meteor shower 2023
21	Moon at First Quarter
22	Comet 2P/Encke passes perihelion Venus at dichotomy
20	Venus at highest altitude in morning sky
23	Venus at greatest elongation west
24	136108 Haumea at solar conjunction Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
25	Leonis Minorid meteor shower 2023
28	The Perseus Double Cluster is well placed Partial lunar eclipse Full Moon
29	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter Comet C/2023 H2 (Lemmon) passes perihelion
30	Close approach of the Moon and M45

November
1	Lunar occultation of Beta Tauri Jupiter at perigee
3	Jupiter at opposition
4	Saturn ends retrograde motion
5	Moon at Last Quarter Asteroid 18 Melpomene at opposition
9	Conjunction of the Moon and Venus Close approach of the Moon and Venus Lunar occultation of Venus
10	Comet C/2023 H2 (Lemmon) passes perigee Comet C/2023 H2 (Lemmon) reaches peak brightness
12	Northern Taurid meteor shower 2023
13	New Moon Uranus at opposition
14	Conjunction of the Moon and Mercury
18	Mars at solar conjunction Leonid meteor shower 2023 The Pleiades cluster is well placed
20	Moon at First Quarter Conjunction of the Moon and Saturn 1 Ceres at solar conjunction Close approach of the Moon and Saturn
22	α-Monocerotid meteor shower 2023
25	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
26	Close approach of the Moon and M45
27	Full Moon
28	Lunar occultation of Beta Tauri November Orionid meteor shower 2023 The Hyades cluster is well placed

December
2	Pheonicid meteor shower 2023
4	Mercury at greatest elongation east
8	Mercury at highest altitude in evening sky
5	Moon at Last Quarter
6	Neptune ends retrograde motion December φ-Cassiopeid meteor shower 2023
7	Puppid-Velid meteor shower 2023
8	Mercury at dichotomy
9	Close approach of the Moon and Venus Monocerotid meteor shower 2023 Conjunction of the Moon and Venus
12	σ-Hydrid meteor shower 2023 New Moon The Large Magellanic Cloud is well placed
14	Conjunction of the Moon and Mercury Geminid meteor shower 2023
15	The Orion Nebula is well placed The Running Man cluster is well placed
16	Comae Berenicid meteor shower 2023
17	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
18	Asteroid 37 Fides at opposition
19	Lunar occultation of Neptune Moon at First Quarter
20	December Leonis Minorid meteor shower 2023
21	Asteroid 4 Vesta at opposition December solstice
22	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter Mercury at inferior solar conjunction Asteroid 9 Metis at opposition
23	Ursid meteor shower 2023
24	Close approach of the Moon and M45
25	Comet 62P/Tsuchinshan passes perihelion Lunar occultation of Beta Tauri
26	Full Moon
27	Asteroid 5 Astraea at opposition
29	The cluster NGC 2232 is well placed
30	The Rosette Nebula is well placed Jupiter ends retrograde motion

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