Calendar of Astronomical Events

Astronomical Calendar for 2091

January
2	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
3	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
4	Quadrantid meteor shower 2091 The Earth at perihelion
5	The Moon at aphelion Full Moon
9	The Moon at perigee 136108 Haumea at solar conjunction
10	Close approach of the Moon and Mars Conjunction of the Moon and Mars Conjunction of Jupiter and Mercury
12	Moon at Last Quarter
14	Conjunction of Venus and Makemake
15	Conjunction of the Moon and Venus Close approach of the Moon and Venus
16	Mercury at aphelion
17	Conjunction of the Moon and Jupiter
18	The Moon at perihelion
19	New Moon
20	γ-Ursae Minorid meteor shower 2091
22	Close approach of the Moon and Uranus Lunar occultation of Uranus
25	The Moon at apogee Mars enters retrograde motion
27	Moon at First Quarter
29	Close approach of the Moon and Collinder 50
30	Lunar occultation of Aldebaran Conjunction of the Moon and Saturn Close approach of the Moon and Saturn

February
3	Full Moon
4	The Moon at aphelion
5	Mercury at superior solar conjunction
6	The Moon at perigee Close approach of the Moon and Mars Conjunction of the Moon and Mars
8	α-Centaurid meteor shower 2091
10	Moon at Last Quarter Close approach of Venus and Jupiter Conjunction of Venus and Jupiter
14	Neptune at opposition Close approach of the Moon, Venus and Jupiter Conjunction of the Moon and Jupiter Mars at aphelion Close approach of the Moon and Venus Conjunction of the Moon and Venus
16	The Moon at perihelion
17	Conjunction of Venus and Haumea Saturn ends retrograde motion
18	New Moon Partial solar eclipse
20	Conjunction of Mercury and Uranus
22	The Moon at apogee
26	Moon at First Quarter Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
27	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn

March
1	Mercury at perihelion
3	Mercury at dichotomy
4	Mercury at greatest elongation east
5	Mercury at highest altitude in evening sky Total lunar eclipse Full Moon Close approach of the Moon and Mars Conjunction of the Moon and Mars Uranus at solar conjunction
6	The Moon at perigee Mars at opposition
7	The Moon at aphelion
8	Mars at perigee
12	Moon at Last Quarter
13	Close approach of the Moon, Venus and Jupiter
14	Conjunction of the Moon and Jupiter
15	γ-Normid meteor shower 2091
16	Close approach of the Moon and Venus Conjunction of the Moon and Venus
17	The Moon at perihelion
19	New Moon
20	March equinox Mercury at inferior solar conjunction
21	The Moon at apogee
25	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
26	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
27	Moon at First Quarter

April
1	Close approach of the Moon and Mars Conjunction of the Moon and Mars
3	Full Moon The Moon at perigee
5	Conjunction of Venus and Uranus
6	The Moon at aphelion
9	Venus at aphelion
10	Moon at Last Quarter Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter Conjunction of Jupiter and Haumea
13	Close approach of Venus and Mercury Conjunction of Venus and Mercury
14	134340 Pluto at solar conjunction Mercury at aphelion
15	Close approach of the Moon and Uranus Lunar occultation of Uranus The Moon at perihelion
16	Close approach of the Moon and Mercury Lunar occultation of Mercury Conjunction of the Moon and Mercury Conjunction of the Moon and Venus Close approach of the Moon and Venus Lunar occultation of Venus Mars ends retrograde motion
17	The Moon at apogee
14	Mercury at highest altitude in morning sky
17	Mercury at greatest elongation west
18	New Moon
20	Mercury at dichotomy
21	Close approach of the Moon and Collinder 50
22	Lunar occultation of Aldebaran Conjunction of Saturn and Ceres Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
23	Lyrid meteor shower 2091
24	π-Puppid meteor shower 2091
26	Moon at First Quarter
28	Close approach of the Moon and Mars Conjunction of the Moon and Mars

May
1	136199 Eris at solar conjunction
2	The Moon at perigee
3	Full Moon Conjunction of Venus and Mercury
5	Neptune ends retrograde motion The Moon at aphelion
7	η-Aquariid meteor shower 2091 Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
9	Jupiter enters retrograde motion η-Lyrid meteor shower 2091
10	Moon at Last Quarter
12	Close approach of the Moon and Uranus Lunar occultation of Uranus
14	Conjunction of Mercury and Eris The Moon at apogee
15	The Moon at perihelion
16	Conjunction of the Moon and Venus
18	New Moon Conjunction of Venus and Eris
20	Conjunction of the Moon and Saturn
25	Lunar occultation of Regulus Moon at First Quarter
26	Close approach of the Moon and Mars Lunar occultation of Mars Conjunction of the Moon and Mars Mercury at superior solar conjunction
28	Mercury at perihelion
30	The Moon at perigee 136472 Makemake at opposition

June
1	Full Moon
2	The Moon at aphelion
4	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
8	Moon at Last Quarter Close approach of the Moon and Uranus Lunar occultation of Uranus
11	Daytime Arietid meteor shower 2091 The Moon at apogee
12	Conjunction of Jupiter and Haumea
14	Conjunction of Mercury and Ceres
15	The Moon at perihelion
16	New Moon
18	Conjunction of the Moon and Mercury
19	Saturn at solar conjunction
20	June solstice
21	Lunar occultation of Regulus
23	Conjunction of the Moon and Mars Close approach of the Moon and Mars Uranus enters retrograde motion
24	Moon at First Quarter Mercury at dichotomy
27	The Moon at perigee
28	June Bootid meteor shower 2091
24	Mercury at highest altitude in evening sky
30	Mercury at greatest elongation east Full Moon

July
1	The Moon at aphelion Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
6	Close approach of the Moon and Uranus Lunar occultation of Uranus
7	The Earth at aphelion
8	Moon at Last Quarter
9	Jupiter at opposition The Moon at apogee
10	Jupiter at perigee
11	Mercury at aphelion
12	136108 Haumea at opposition Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
14	Conjunction of the Moon and Saturn
16	New Moon The Moon at perihelion
17	Conjunction of the Moon and Mercury
19	Lunar occultation of Regulus
21	Conjunction of the Moon and Mars Close approach of the Moon and Mars
22	The Moon at perigee
23	Moon at First Quarter 1 Ceres at solar conjunction
24	Venus at superior solar conjunction
27	Mercury at inferior solar conjunction
28	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
29	The Moon at aphelion Piscis Austrinid meteor shower 2091
30	Blue Moon
31	Southern δ-Aquariid meteor shower 2091 α-Capricornid meteor shower 2091 Venus at perihelion

August
2	Close approach of the Moon and Uranus Lunar occultation of Uranus
6	The Moon at apogee
7	Moon at Last Quarter
9	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
11	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
13	Lunar occultation of Mercury Conjunction of the Moon and Mercury Perseid meteor shower 2091
14	New Moon Total solar eclipse
15	Mercury at greatest elongation west
17	Mercury at highest altitude in morning sky
16	The Moon at perihelion
17	The Moon at perigee
18	Mercury at dichotomy κ-Cygnid meteor shower 2091
19	Conjunction of the Moon and Mars Close approach of the Moon and Mars Neptune at solar conjunction
21	Moon at First Quarter
24	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter Mercury at perihelion Conjunction of Mercury and Ceres
26	The Moon at aphelion
28	Total lunar eclipse Full Moon
29	Close approach of the Moon and Uranus Lunar occultation of Uranus

September
2	Aurigid meteor shower 2091 The Moon at apogee
5	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran Moon at Last Quarter
7	Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
8	Jupiter ends retrograde motion
9	Mercury at superior solar conjunction
10	Uranus at opposition September ε-Perseid meteor shower 2091
13	New Moon
14	Conjunction of the Moon and Venus The Moon at perigee
15	The Moon at perihelion
16	Conjunction of the Moon and Mars Close approach of the Moon and Mars
17	Conjunction of Neptune and Ceres
19	Moon at First Quarter
20	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
22	September equinox
24	The Moon at aphelion
25	Close approach of the Moon and Uranus Lunar occultation of Uranus
27	Full Moon
28	Daytime Sextantid meteor shower 2091
30	The Moon at apogee

October
2	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
5	Close approach of the Moon and Saturn Conjunction of the Moon and Saturn Moon at Last Quarter
6	October Camelopardalid meteor shower 2091
7	Mercury at aphelion
9	Lunar occultation of Neptune Lunar occultation of Regulus Draconid meteor shower 2091
11	Southern Taurid meteor shower 2091
12	δ-Aurigid meteor shower 2091 New Moon
13	The Moon at perigee Conjunction of the Moon and Mercury Conjunction of the Moon and Venus
14	The Moon at perihelion
15	Conjunction of the Moon and Mars
18	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter 134340 Pluto at opposition
19	Moon at First Quarter ε-Geminid meteor shower 2091
20	Conjunction of Mars and Makemake
21	Saturn enters retrograde motion
22	Orionid meteor shower 2091
23	Close approach of the Moon and Uranus Lunar occultation of Uranus
24	The Moon at aphelion
25	Leonis Minorid meteor shower 2091
26	Mercury at greatest elongation east
27	Mercury at highest altitude in evening sky Full Moon The Moon at apogee Saturn at perihelion
30	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
31	Mercury at dichotomy

November
1	Close approach of the Moon and Saturn Conjunction of the Moon and Saturn
3	136199 Eris at opposition
4	Moon at Last Quarter
5	Close approach of the Moon and Neptune Lunar occultation of Neptune Conjunction of Venus and Makemake Lunar occultation of Regulus
10	The Moon at perigee New Moon
12	The Moon at perihelion Conjunction of the Moon and Venus
13	Northern Taurid meteor shower 2091 Conjunction of the Moon and Mars
14	Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
16	Conjunction of Jupiter and Haumea Mercury at inferior solar conjunction
17	Moon at First Quarter
18	Leonid meteor shower 2091 Close approach of Mars and M8
19	Close approach of the Moon and Uranus Lunar occultation of Uranus
20	Venus at aphelion Mercury at perihelion
22	α-Monocerotid meteor shower 2091
23	The Moon at apogee The Moon at aphelion
24	Uranus ends retrograde motion
25	Full Moon
26	Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
28	Close approach of Mars and M22 Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
29	November Orionid meteor shower 2091 Conjunction of Venus and Mars Close approach of Venus and Mars
30	Mercury at dichotomy

December
1	Neptune enters retrograde motion 136472 Makemake at solar conjunction
2	Close approach of the Moon and Neptune Lunar occultation of Neptune Lunar occultation of Regulus
3	Pheonicid meteor shower 2091 1 Ceres at perihelion Moon at Last Quarter Mercury at highest altitude in morning sky
4	Mercury at greatest elongation west
7	December φ-Cassiopeid meteor shower 2091 Conjunction of Venus and Haumea
8	Puppid-Velid meteor shower 2091 Conjunction of the Moon and Mercury
9	The Moon at perigee
10	Monocerotid meteor shower 2091 New Moon Conjunction of Venus and Jupiter Close approach of Venus and Jupiter
11	The Moon at perihelion Conjunction of Mars and Haumea
12	Conjunction of the Moon and Mars Close approach of the Moon and Jupiter Conjunction of the Moon and Jupiter
13	σ-Hydrid meteor shower 2091
12	Close approach of the Moon, Venus and Jupiter Conjunction of the Moon and Venus
15	Geminid meteor shower 2091
16	Close approach of the Moon and Uranus Lunar occultation of Uranus Comae Berenicid meteor shower 2091
17	Moon at First Quarter
18	Conjunction of Mercury and Makemake
19	Conjunction of Jupiter and Mars Close approach of Jupiter and Mars
20	December Leonis Minorid meteor shower 2091
21	The Moon at apogee December solstice
23	Ursid meteor shower 2091 Close approach of the Moon and Collinder 50 Lunar occultation of Aldebaran
24	The Moon at aphelion
25	Full Moon Conjunction of the Moon and Saturn Close approach of the Moon and Saturn
27	Saturn at opposition
29	Close approach of the Moon and Neptune Lunar occultation of Neptune
30	Lunar occultation of Regulus

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