521.

The Perseus Double Cluster is well placed The Perseus Double Cluster (NGC 869 and NGC 884; combined mag 4.3) culminates at around midnight local time. Fri, 27 Oct 2023 (246 days ago) in Perseus

522.

Partial lunar eclipse There will be an eclipse of the Moon, visible from Asia, Russia, Africa, the Americas, Europe, Antarctica and Oceania. Sat, 28 Oct 2023 at 16:15 EDT (245 days ago) in Aries

523.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 28 Oct 2023 at 16:23 EDT (245 days ago) in Aries

524.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 29 Oct 2023 at 02:10 EDT (244 days ago) in Aries

525.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°08'. Sun, 29 Oct 2023 at 04:14 EDT (244 days ago) in Aries

526.

Comet C/2023 H2 (Lemmon) passes perihelion Comet C/2023 H2 (Lemmon) makes its closest approach to the Sun. Sun, 29 Oct 2023 (244 days ago)

527.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Mon, 30 Oct 2023 at 11:49 EDT (243 days ago) in Taurus

528.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from Argentina, Chile, Bolivia and Peru. Wed, 01 Nov 2023 at 04:24 EDT (241 days ago) in Taurus

529.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Wed, 01 Nov 2023 at 17:00 EDT (241 days ago) in Aries

530.

Jupiter at opposition Jupiter lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Fri, 03 Nov 2023 at 00:55 EDT (239 days ago) in Aries

531.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sat, 04 Nov 2023 at 03:16 EDT (238 days ago) in Aquarius

532.

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. Sun, 05 Nov 2023 at 03:37 EDT (237 days ago) in Cancer

533.

Asteroid 18 Melpomene at opposition Asteroid 18 Melpomene makes closest approach to the Earth. Sun, 05 Nov 2023 at 11:46 EDT (237 days ago) in Eridanus

534.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Mon, 06 Nov 2023 at 12:40 EDT (236 days ago) in Libra

535.

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. Mon, 06 Nov 2023 at 16:48 EDT (236 days ago) in Leo

536.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°00'. Thu, 09 Nov 2023 at 04:30 EDT (233 days ago) in Virgo

537.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Thu, 09 Nov 2023 at 05:34 EDT (233 days ago) in Virgo

538.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from Africa, Asia, Europe, Greenland, Russia, Corsica, Guernsey, Svalbard, Menorca, Mallorca, Ibiza, Shetland, Orkney, Northern Ireland and RAF Akrotiri. Thu, 09 Nov 2023 at 05:34 EDT (233 days ago) in Virgo

539.

Comet C/2023 H2 (Lemmon) passes perigee Comet C/2023 H2 (Lemmon) makes its closest approach to the Earth. Fri, 10 Nov 2023 (232 days ago) in Hercules

540.

Comet C/2023 H2 (Lemmon) reaches peak brightness Comet C/2023 H2 (Lemmon) is forecast to reach the brightest point in its 2023 apparition. Fri, 10 Nov 2023 (232 days ago) in Hercules