Calendar of Astronomical Events

Astronomical Calendar for 2021

January
1	The cluster Messier 41 is well placed
2	The Earth at perihelion
3	Quadrantid meteor shower 2021
6	Moon at Last Quarter
9	Lunar occultation of Beta1 Scorpii Conjunction of Mercury and Saturn
11	Conjunction of Jupiter and Mercury Conjunction of Neptune and Ceres Conjunction of the Moon and Venus
13	New Moon
14	Conjunction of the Moon and Mercury Uranus ends retrograde motion 134340 Pluto at solar conjunction The cluster Messier 47 is well placed NGC 2403 is well placed
16	The cluster NGC 2451 is well placed
19	γ-Ursae Minorid meteor shower 2021
20	Moon at First Quarter The cluster NGC 2516 is well placed
21	Conjunction of the Moon and Mars Close approach of the Moon, Mars and Uranus Asteroid 15 Eunomia at opposition Conjunction of Mars and Uranus
22	Comet C/2021 A2 (NEOWISE) passes perihelion
23	The cluster NGC 2547 is well placed Mercury at greatest elongation east
25	Mercury at highest altitude in evening sky
23	Saturn at solar conjunction
24	Asteroid 14 Irene at opposition
25	Mercury at dichotomy
28	Full Moon Conjunction of Venus and Pluto Jupiter at solar conjunction
30	The Beehive cluster is well placed
31	The Omicron Velorum cluster is well placed The cluster IC 2395 is well placed

February
2	Asteroid 18 Melpomene at opposition
4	Moon at Last Quarter
5	Lunar occultation of Beta1 Scorpii
7	NGC 2808 is well placed
8	α-Centaurid meteor shower 2021 Mercury at inferior solar conjunction
10	Conjunction of the Moon and Saturn
11	New Moon
18	Conjunction of the Moon and Mars Close approach of the Moon and Mars
19	Moon at First Quarter Messier 81 is well placed
20	The cluster NGC 3114 is well placed
21	Asteroid 29 Amphitrite at opposition
27	Full Moon Comet C/2021 D1 (SWAN) passes perihelion The cluster IC 2581 is well placed
26	Mercury at highest altitude in morning sky

March
2	Comet C/2020 R4 (ATLAS) passes perihelion Mercury at dichotomy
3	The Theta Carinae cluster is well placed Asteroid 4 Vesta at opposition
4	Lunar occultation of Beta1 Scorpii
5	Close approach of Jupiter and Mercury Conjunction of Jupiter and Mercury Moon at Last Quarter
6	Mercury at greatest elongation west
7	Lunar occultation of Sigma Sagittarii
8	The Wishing Well cluster is well placed
9	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
10	Conjunction of the Moon and Jupiter Neptune at solar conjunction Conjunction of the Moon and Mercury
13	New Moon
14	γ-Normid meteor shower 2021
19	Conjunction of the Moon and Mars Close approach of the Moon and Mars
20	March equinox
21	Moon at First Quarter
22	Comet 10P/Tempel passes perihelion
26	Venus at superior solar conjunction
27	136472 Makemake at opposition
28	Full Moon
29	Conjunction of Mercury and Neptune

April
1	Lunar occultation of Beta1 Scorpii
2	The Sombrero Galaxy is well placed
4	Lunar occultation of Sigma Sagittarii Moon at Last Quarter Asteroid 9 Metis at opposition
5	Messier 94 is well placed
6	The Jewel Box cluster is well placed Conjunction of the Moon and Saturn Close approach of the Moon and Saturn 1 Ceres at solar conjunction
7	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
11	New Moon
13	136199 Eris at solar conjunction
14	Centaurus A is well placed Omega Centauri is well placed
15	The Whirlpool Galaxy is well placed
17	Messier 83 is well placed Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars 136108 Haumea at opposition
18	Messier 3 is well placed Mercury at superior solar conjunction
20	Moon at First Quarter
22	Lyrid meteor shower 2021
23	Messier 101 is well placed π-Puppid meteor shower 2021
26	Full Moon
28	Conjunction of Ceres and Eris Lunar occultation of Beta1 Scorpii
30	Uranus at solar conjunction

May
1	Lunar occultation of Sigma Sagittarii
3	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn Moon at Last Quarter
4	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
6	η-Aquariid meteor shower 2021
8	η-Lyrid meteor shower 2021
11	New Moon
12	Messier 5 is well placed Mercury at dichotomy Conjunction of the Moon and Venus Lunar occultation of Venus
13	Conjunction of the Moon and Mercury
16	Conjunction of the Moon and Mars Close approach of the Moon and Mars
15	Mercury at highest altitude in evening sky
17	Mercury at greatest elongation east
19	Moon at First Quarter
23	Saturn enters retrograde motion
26	Lunar occultation of Beta1 Scorpii Full Moon Total lunar eclipse
28	Lunar occultation of Sigma Sagittarii
29	Messier 4 is well placed Conjunction of Venus and Mercury
30	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn

June
1	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
2	Moon at Last Quarter
3	The Great Globular Cluster in Hercules is well placed Asteroid 63 Ausonia at opposition
4	Messier 12 is well placed
5	Conjunction of Uranus and Ceres
6	Messier 10 is well placed
7	Messier 62 is well placed
10	Annular solar eclipse New Moon Daytime Arietid meteor shower 2021 Mercury at inferior solar conjunction
12	Messier 92 is well placed Conjunction of the Moon and Venus
13	Conjunction of the Moon and Mars Close approach of the Moon and Mars
16	NGC 6388 is well placed
17	The Butterfly cluster is well placed Comet 15P/Finlay passes perigee
18	NGC 6397 is well placed
17	Moon at First Quarter
19	The cluster IC 4665 is well placed
20	Jupiter enters retrograde motion
21	The Ptolemy cluster is well placed
20	June solstice
22	Lunar occultation of Beta1 Scorpii
23	The Lagoon Nebula is well placed Close approach of Mars and M44
24	NGC 6541 is well placed Full Moon
25	Lunar occultation of Sigma Sagittarii Neptune enters retrograde motion
27	Conjunction of the Moon and Saturn June Bootid meteor shower 2021 Close approach of the Moon and Saturn
28	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
29	The cluster NGC 6633 is well placed

July
1	Moon at Last Quarter
2	Messier 22 is well placed The cluster IC 4756 is well placed
3	Close approach of Venus and M44
5	Mercury at greatest elongation west
9	Mercury at highest altitude in morning sky
5	The Earth at aphelion
7	Comet 15P/Finlay reaches peak brightness
8	Conjunction of the Moon and Mercury
9	Mercury at dichotomy
10	The Great Peacock Globular Cluster is well placed
9	New Moon
10	Comet C/2020 T2 (Palomar) passes perihelion
12	Conjunction of the Moon and Venus Conjunction of the Moon and Mars
13	Conjunction of Venus and Mars Comet 15P/Finlay passes perihelion Close approach of Venus and Mars
17	Moon at First Quarter 134340 Pluto at opposition
18	Messier 55 is well placed Asteroid 6 Hebe at opposition
19	Lunar occultation of Beta1 Scorpii
22	Lunar occultation of Sigma Sagittarii
23	Full Moon
24	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
25	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
28	Piscis Austrinid meteor shower 2021
30	Southern δ-Aquariid meteor shower 2021 α-Capricornid meteor shower 2021 Asteroid 12 Victoria at opposition
31	Moon at Last Quarter

August
1	Mercury at superior solar conjunction
2	Saturn at opposition
8	New Moon
9	Conjunction of the Moon and Mars
11	Conjunction of the Moon and Venus Close approach of the Moon and Venus
12	Perseid meteor shower 2021
15	Messier 15 is well placed Moon at First Quarter
16	Messier 2 is well placed Lunar occultation of Beta1 Scorpii
18	κ-Cygnid meteor shower 2021 Lunar occultation of Sigma Sagittarii
19	Conjunction of Mercury and Mars Asteroid 43 Ariadne at opposition Jupiter at opposition Uranus enters retrograde motion
20	Jupiter at perigee Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
22	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Full Moon
24	Asteroid 89 Julia at opposition
28	Comet 8P/Tuttle passes perihelion
30	Moon at Last Quarter

September
1	Aurigid meteor shower 2021 Comet 8P/Tuttle reaches peak brightness
6	New Moon
8	Conjunction of the Moon and Mercury
9	September ε-Perseid meteor shower 2021 Comet 4P/Faye passes perihelion Conjunction of the Moon and Venus
10	Close approach of the Moon and Venus
11	Asteroid 2 Pallas at opposition
12	Lunar occultation of Beta1 Scorpii
13	Moon at First Quarter
2	Mercury at highest altitude in evening sky
13	Mercury at greatest elongation east
14	Neptune at opposition
15	Lunar occultation of Sigma Sagittarii
16	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
17	Mercury at dichotomy
18	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
20	Full Moon
22	September equinox
24	Close approach of the Moon and Uranus
25	NGC 55 is well placed
27	Daytime Sextantid meteor shower 2021
28	47 Tuc is well placed Moon at Last Quarter
30	136472 Makemake at solar conjunction

October
1	Asteroid 40 Harmonia at opposition
3	The Andromeda Galaxy is well placed
4	NGC 253 is well placed
5	The Small Magellanic Cloud is well placed October Camelopardalid meteor shower 2021
6	NGC 300 is well placed New Moon
8	NGC 362 is well placed
7	Mars at solar conjunction
8	Draconid meteor shower 2021
9	Mercury at inferior solar conjunction Conjunction of the Moon and Venus Close approach of the Moon and Venus Lunar occultation of Beta1 Scorpii
10	Southern Taurid meteor shower 2021 Saturn ends retrograde motion
11	δ-Aurigid meteor shower 2021
12	Lunar occultation of Sigma Sagittarii Moon at First Quarter
14	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
15	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
16	The Triangulum Galaxy is well placed
17	136199 Eris at opposition
18	Jupiter ends retrograde motion ε-Geminid meteor shower 2021
20	Full Moon
21	Orionid meteor shower 2021 136108 Haumea at solar conjunction Close approach of the Moon and Uranus
23	Mercury at dichotomy
24	Leonis Minorid meteor shower 2021
25	Mercury at highest altitude in morning sky
24	Mercury at greatest elongation west
27	The Perseus Double Cluster is well placed
28	Venus at dichotomy Moon at Last Quarter
29	Venus at greatest elongation east

November
2	Comet 67P/Churyumov-Gerasimenko passes perihelion
3	Conjunction of the Moon and Mercury Lunar occultation of Mercury
4	New Moon Uranus at opposition
8	Conjunction of the Moon and Venus Close approach of the Moon and Venus Lunar occultation of Venus Comet 67P/Churyumov-Gerasimenko reaches peak brightness Lunar occultation of Sigma Sagittarii
10	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
11	Moon at First Quarter Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
12	Northern Taurid meteor shower 2021 Comet 67P/Churyumov-Gerasimenko passes perigee
17	Leonid meteor shower 2021 The Pleiades cluster is well placed
19	Full Moon Partial lunar eclipse
21	α-Monocerotid meteor shower 2021
26	1 Ceres at opposition
27	Moon at Last Quarter The Hyades cluster is well placed
28	November Orionid meteor shower 2021 Mercury at superior solar conjunction

December
6	Venus at highest altitude in evening sky
1	Neptune ends retrograde motion
2	Pheonicid meteor shower 2021 Conjunction of the Moon and Mars
4	Total solar eclipse New Moon
6	December φ-Cassiopeid meteor shower 2021 Lunar occultation of Sigma Sagittarii Conjunction of the Moon and Venus Close approach of the Moon and Venus
7	Puppid-Velid meteor shower 2021 Venus at greatest brightness Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
9	Monocerotid meteor shower 2021 Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
10	Asteroid 44 Nysa at opposition Moon at First Quarter
11	Conjunction of Venus and Pluto
12	σ-Hydrid meteor shower 2021 Comet C/2021 A1 (Leonard) passes perigee The Large Magellanic Cloud is well placed
14	Geminid meteor shower 2021
15	The Running Man cluster is well placed The Orion Nebula is well placed
16	Comae Berenicid meteor shower 2021
18	Full Moon
19	December Leonis Minorid meteor shower 2021
21	December solstice
22	Ursid meteor shower 2021
23	Conjunction of Venus and Pluto
26	Moon at Last Quarter
28	The cluster NGC 2232 is well placed Conjunction of Venus and Mercury
29	The Rosette Nebula is well placed
30	Conjunction of Mercury and Pluto
31	Close approach of the Moon and Mars Lunar occultation of Mars Conjunction of the Moon and Mars

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