Calendar of Astronomical Events

Astronomical Calendar for 2020

January
1	The Moon at apogee
2	The cluster Messier 41 is well placed Moon at First Quarter
4	Quadrantid meteor shower 2020
5	The Earth at perihelion
10	Mercury at superior solar conjunction Penumbral lunar eclipse Full Moon The Moon at aphelion Uranus ends retrograde motion
11	Supernova SN2020ue discovered Close approach of the Moon and M44
13	Saturn at solar conjunction 134340 Pluto at solar conjunction The Moon at perigee
14	1 Ceres at solar conjunction Asteroid 511 Davida at opposition
15	The cluster Messier 47 is well placed NGC 2403 is well placed
17	Moon at Last Quarter The cluster NGC 2451 is well placed Supernova SN2020afp discovered
19	γ-Ursae Minorid meteor shower 2020
20	Conjunction of the Moon and Mars Close approach of the Moon and Mars The cluster NGC 2516 is well placed Asteroid 5 Astraea at opposition
22	Close approach of the Moon and Jupiter Lunar occultation of Jupiter Conjunction of the Moon and Jupiter
23	The Moon at perihelion
24	New Moon The cluster NGC 2547 is well placed
27	Conjunction of Venus and Neptune Close approach of Venus and Neptune
28	Conjunction of the Moon and Venus Close approach of the Moon and Venus
29	The Moon at apogee
31	The Beehive cluster is well placed The Omicron Velorum cluster is well placed

February
1	The cluster IC 2395 is well placed Moon at First Quarter
8	Close approach of the Moon and M44 α-Centaurid meteor shower 2020 NGC 2808 is well placed
9	Full Moon
10	Mercury at greatest elongation east
11	Mercury at highest altitude in evening sky
10	The Moon at aphelion The Moon at perigee Mercury at dichotomy
12	Mercury at perihelion
15	Moon at Last Quarter
17	Close approach of Mars and M8
18	Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars
19	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Lunar occultation of Jupiter Messier 81 is well placed
20	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
21	The Moon at perihelion The cluster NGC 3114 is well placed
23	New Moon
25	Mercury at inferior solar conjunction
26	The Moon at apogee
27	Conjunction of the Moon and Venus Close approach of the Moon and Venus The cluster IC 2581 is well placed
28	Close approach of Mars and M22

March
2	Moon at First Quarter The Theta Carinae cluster is well placed
6	Close approach of the Moon and M44
8	Neptune at solar conjunction The Wishing Well cluster is well placed
9	Conjunction of Venus and Uranus Full Moon
10	The Moon at perigee
11	The Moon at aphelion
14	γ-Normid meteor shower 2020 Asteroid 27 Euterpe at opposition
16	Moon at Last Quarter
18	Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars Conjunction of the Moon and Jupiter Close approach of the Moon, Jupiter and Mars Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
19	Venus at perihelion March equinox
20	Conjunction of Jupiter and Mars Close approach of Jupiter and Mars
21	The Moon at perihelion Conjunction of the Moon and Mercury
22	Mercury at dichotomy
23	Conjunction of Mars and Pluto
16	Mercury at highest altitude in morning sky
23	Mercury at greatest elongation west
24	Venus at greatest elongation east
26	Venus at highest altitude in evening sky
24	New Moon The Moon at apogee
26	136472 Makemake at opposition Venus at dichotomy
27	Mercury at aphelion
28	Conjunction of the Moon and Venus Close approach of the Moon and Venus
31	Conjunction of Saturn and Mars Close approach of Saturn and Mars

April
1	Moon at First Quarter The Sombrero Galaxy is well placed
2	Supernova SN2020ftl discovered Asteroid 3 Juno at opposition
3	Conjunction of Mercury and Neptune Close approach of Venus and M45
4	Messier 94 is well placed The Jewel Box cluster is well placed
7	The Moon at perigee Full Moon
9	Conjunction of Jupiter and Pluto
10	The Moon at aphelion
13	136199 Eris at solar conjunction Centaurus A is well placed Omega Centauri is well placed
14	Moon at Last Quarter Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter The Whirlpool Galaxy is well placed
15	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn Messier 83 is well placed
16	Conjunction of the Moon and Mars Close approach of the Moon and Mars 136108 Haumea at opposition
17	Messier 3 is well placed
19	The Moon at perihelion
20	The Moon at apogee
21	Supernova SN2020hvf discovered Conjunction of the Moon and Mercury
22	Lyrid meteor shower 2020 Messier 101 is well placed New Moon
23	π-Puppid meteor shower 2020
26	Uranus at solar conjunction Conjunction of the Moon and Venus
28	Venus at greatest brightness
30	Moon at First Quarter

May
4	Mercury at superior solar conjunction
5	Comet C/2017 T2 (PANSTARRS) passes perihelion η-Aquariid meteor shower 2020 The Moon at perigee
7	Full Moon
8	η-Lyrid meteor shower 2020
9	The Moon at aphelion
10	Mercury at perihelion Saturn enters retrograde motion
11	Messier 5 is well placed
12	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
14	Moon at Last Quarter Jupiter enters retrograde motion Conjunction of the Moon and Mars Close approach of the Moon and Mars
15	Comet C/2017 T2 (PANSTARRS) reaches peak brightness
18	Close approach of Jupiter and Saturn The Moon at apogee
20	The Moon at perihelion
22	Conjunction of Venus and Mercury New Moon
23	Conjunction of the Moon and Venus
24	Conjunction of the Moon and Mercury
27	Comet 58P/Jackson-Neujmin passes perihelion
28	Messier 4 is well placed
29	Mercury at dichotomy Moon at First Quarter
31	Supernova SN2020llx discovered Conjunction of Mars and Ceres

June
1	The Great Globular Cluster in Hercules is well placed
2	The Moon at perigee
3	Venus at inferior solar conjunction Messier 12 is well placed
1	Mercury at highest altitude in evening sky
4	Mercury at greatest elongation east
5	Full Moon Penumbral lunar eclipse Messier 10 is well placed
6	Messier 62 is well placed The Moon at aphelion
8	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
10	Daytime Arietid meteor shower 2020 Messier 92 is well placed
12	Conjunction of Mars and Neptune Conjunction of the Moon and Mars Close approach of the Moon and Mars
13	Moon at Last Quarter
14	The Moon at apogee
15	NGC 6388 is well placed
16	The Butterfly cluster is well placed NGC 6397 is well placed
18	Comet C/2019 U6 (Lemmon) passes perihelion The cluster IC 4665 is well placed
19	Close approach of the Moon and Venus Lunar occultation of Venus Conjunction of the Moon and Venus
20	The Moon at perihelion June solstice The Ptolemy cluster is well placed
21	Annular solar eclipse New Moon
22	Conjunction of the Moon and Mercury Comet C/2019 U6 (Lemmon) reaches peak brightness The Lagoon Nebula is well placed Neptune enters retrograde motion
23	Mercury at aphelion NGC 6541 is well placed
25	Conjunction of Jupiter and Pluto
27	June Bootid meteor shower 2020 Asteroid 7 Iris at opposition
28	Moon at First Quarter Comet C/2019 U6 (Lemmon) passes perigee The cluster NGC 6633 is well placed
29	The Moon at perigee
30	Messier 22 is well placed Mercury at inferior solar conjunction

July
1	Supernova SN2020nvb discovered The cluster IC 4756 is well placed
2	Comet 2P/Encke passes perihelion Asteroid 532 Herculina at opposition
4	The Earth at aphelion Comet C/2020 F3 (NEOWISE) passes perihelion
5	Penumbral lunar eclipse Full Moon The Moon at aphelion Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
6	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
7	Close approach of Venus and Collinder 50
8	Venus at greatest brightness
9	The Great Peacock Globular Cluster is well placed
10	Venus at aphelion
11	Conjunction of the Moon and Mars Close approach of the Moon and Mars
12	The Moon at apogee Moon at Last Quarter
14	Jupiter at opposition
15	Jupiter at perigee Asteroid 2 Pallas at opposition 134340 Pluto at opposition
17	Close approach of the Moon and Venus Conjunction of the Moon and Venus Messier 55 is well placed
18	Conjunction of the Moon and Mercury
20	New Moon Saturn at opposition The Moon at perihelion
22	Mercury at greatest elongation west
26	Mercury at highest altitude in morning sky
23	Comet C/2020 F3 (NEOWISE) passes perigee
25	The Moon at perigee
26	Mercury at dichotomy
27	Moon at First Quarter
28	Piscis Austrinid meteor shower 2020
29	Lunar occultation of Beta1 Scorpii Southern δ-Aquariid meteor shower 2020 α-Capricornid meteor shower 2020

August
1	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
2	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn The Moon at aphelion
3	Mars at perihelion Full Moon
4	Comet 2P/Encke passes perigee
5	Mercury at perihelion
9	Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars The Moon at apogee
11	Moon at Last Quarter
12	Perseid meteor shower 2020 Venus at dichotomy
13	Venus at greatest elongation west Messier 15 is well placed
14	Comet C/2020 Q1 (Borisov) passes perihelion Messier 2 is well placed
15	Close approach of the Moon and Venus Conjunction of the Moon and Venus Uranus enters retrograde motion 1 Ceres at aphelion
17	Mercury at superior solar conjunction κ-Cygnid meteor shower 2020
18	New Moon
20	Supernova SN2020scc discovered The Moon at perihelion
21	The Moon at perigee
23	Mars 2020: a great chance to see the red planet
25	Moon at First Quarter Lunar occultation of Beta1 Scorpii
28	Asteroid 20 Massalia at opposition 1 Ceres at opposition Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter
29	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
30	The Moon at aphelion
31	Aurigid meteor shower 2020 Conjunction of Mars and Eris

September
2	Venus at highest altitude in morning sky Full Moon
6	Supernova SN2020ssf discovered Close approach of the Moon and Mars Lunar occultation of Mars Conjunction of the Moon and Mars The Moon at apogee
9	September ε-Perseid meteor shower 2020 Mars enters retrograde motion
10	Moon at Last Quarter Asteroid 19 Fortuna at opposition
11	Neptune at opposition
12	Jupiter ends retrograde motion
14	Conjunction of the Moon and Venus Close approach of the Moon and Venus
15	Comet C/2020 K8 (Catalina-ATLAS) passes perihelion
16	Supernova SN2020tlf discovered
17	New Moon Comet 88P/Howell reaches peak brightness
18	The Moon at perigee Conjunction of the Moon and Mercury Mercury at aphelion
19	Conjunction of Mars and Eris The Moon at perihelion
21	Lunar occultation of Beta1 Scorpii
22	September equinox
23	Moon at First Quarter
24	NGC 55 is well placed
25	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Comet 88P/Howell passes perihelion Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
27	Daytime Sextantid meteor shower 2020 47 Tuc is well placed
28	Supernova SN2020ukx discovered The Moon at aphelion
29	Saturn ends retrograde motion 136472 Makemake at solar conjunction
23	Mercury at highest altitude in evening sky

October
1	Mercury at greatest elongation east Full Moon The Andromeda Galaxy is well placed
2	Conjunction of the Moon and Mars Close approach of the Moon and Mars Lunar occultation of Mars
3	The Moon at apogee NGC 253 is well placed
4	The Small Magellanic Cloud is well placed NGC 300 is well placed
5	Supernova SN2020uxz discovered October Camelopardalid meteor shower 2020
6	Mars at perigee Mercury at dichotomy
7	NGC 362 is well placed
8	Draconid meteor shower 2020
9	Moon at Last Quarter
10	Southern Taurid meteor shower 2020
11	δ-Aurigid meteor shower 2020
13	Comet C/2020 P1 (NEOWISE) passes perigee Mars at opposition Conjunction of the Moon and Venus Close approach of the Moon and Venus
14	The Triangulum Galaxy is well placed
16	New Moon The Moon at perigee
17	136199 Eris at opposition Conjunction of the Moon and Mercury
18	ε-Geminid meteor shower 2020 The Moon at perihelion
19	Lunar occultation of Beta1 Scorpii
20	Comet C/2020 P1 (NEOWISE) passes perihelion 136108 Haumea at solar conjunction
21	The Great Conjunction of 2020 Supernova SN2020xtz discovered Orionid meteor shower 2020
22	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Conjunction of the Moon and Saturn
23	Close approach of the Moon and Saturn Asteroid 11 Parthenope at opposition Moon at First Quarter
24	Leonis Minorid meteor shower 2020
25	Comet C/2020 M3 (ATLAS) passes perihelion Mercury at inferior solar conjunction
26	The Perseus Double Cluster is well placed
27	Asteroid 471 Papagena at opposition
28	The Moon at aphelion
29	Conjunction of the Moon and Mars Close approach of the Moon and Mars
30	The Moon at apogee Venus at perihelion
31	Blue Moon Uranus at opposition

November
1	Asteroid 8 Flora at opposition Mercury at perihelion
8	Moon at Last Quarter Mercury at dichotomy
9	Comet C/2020 M3 (ATLAS) reaches peak brightness
10	Mercury at highest altitude in morning sky Mercury at greatest elongation west
12	Northern Taurid meteor shower 2020 Conjunction of the Moon and Venus Close approach of the Moon and Venus
13	Conjunction of the Moon and Mercury Mars ends retrograde motion
14	The Moon at perigee Comet C/2020 M3 (ATLAS) passes perigee
15	New Moon Conjunction of Jupiter and Pluto Supernova AT2020aahp discovered
16	The Moon at perihelion
17	Leonid meteor shower 2020 Comet C/2020 S3 (Erasmus) passes perigee The Pleiades cluster is well placed
19	Conjunction of the Moon and Jupiter Close approach of the Moon and Jupiter Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
21	α-Monocerotid meteor shower 2020 Moon at First Quarter
25	Conjunction of the Moon and Mars Close approach of the Moon and Mars
26	The Moon at apogee
27	The Hyades cluster is well placed
28	November Orionid meteor shower 2020 The Moon at aphelion Neptune ends retrograde motion
30	Full Moon Penumbral lunar eclipse Comet C/2019 N1 (ATLAS) passes perihelion

December
1	Pheonicid meteor shower 2020
3	Gaia Early Data Release 3
5	December φ-Cassiopeid meteor shower 2020
6	Puppid-Velid meteor shower 2020
7	Asteroid 16 Psyche at opposition Moon at Last Quarter
8	Monocerotid meteor shower 2020
11	Asteroid 79 Eurynome at opposition Comet C/2020 S3 (Erasmus) passes perihelion σ-Hydrid meteor shower 2020
12	Conjunction of the Moon and Venus The Moon at perigee Close approach of the Moon and Venus Lunar occultation of Venus The Large Magellanic Cloud is well placed
13	Geminid meteor shower 2020
14	Total solar eclipse New Moon
15	The Moon at perihelion Comae Berenicid meteor shower 2020 The Running Man cluster is well placed The Orion Nebula is well placed Mercury at aphelion
16	Conjunction of the Moon and Jupiter
17	Close approach of the Moon and Jupiter Conjunction of the Moon and Saturn Close approach of the Moon, Jupiter and Saturn Comet 141P/Machholz passes perihelion
19	December Leonis Minorid meteor shower 2020 Mercury at superior solar conjunction
21	December solstice Conjunction of Jupiter and Saturn Great conjunction of Jupiter and Saturn Moon at First Quarter
22	Ursid meteor shower 2020
23	Conjunction of the Moon and Mars Close approach of the Moon and Mars
24	The Moon at apogee
27	Comet 398P/Boattini passes perihelion
28	The cluster NGC 2232 is well placed
29	The Moon at aphelion The Rosette Nebula is well placed Full Moon

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