641.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sat, 23 Sep 2023 at 14:06 EDT (298 days ago) in Leo

642.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Mon, 25 Sep 2023 (296 days ago) in Sculptor

643.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°38'. Tue, 26 Sep 2023 at 21:29 EDT (295 days ago) in Aquarius

644.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 26 Sep 2023 at 23:12 EDT (295 days ago) in Aquarius

645.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Wed, 27 Sep 2023 at 02:44 EDT (294 days ago) in Aquarius

646.

47 Tuc is well placed The second brightest globular cluster in the sky, 47 Tuc (NGC 104; mag 4.0), in Tucana culminates at around midnight local time. Wed, 27 Sep 2023 (294 days ago) in Tucana

647.

Daytime Sextantid meteor shower 2023 The Daytime Sextantid meteor shower reaches its peak. Wed, 27 Sep 2023 (293 days ago) in Sextans

648.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Wed, 27 Sep 2023 at 20:58 EDT (294 days ago) in Aquarius

649.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 29 Sep 2023 at 05:57 EDT (292 days ago) in Pisces

650.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 01 Oct 2023 at 21:08 EDT (290 days ago) in Aries

651.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°23'. Sun, 01 Oct 2023 at 23:19 EDT (290 days ago) in Aries

652.

Asteroid 29 Amphitrite at opposition Asteroid 29 Amphitrite makes closest approach to the Earth. Mon, 02 Oct 2023 at 00:46 EDT (289 days ago) in Pisces

653.

The Andromeda Galaxy is well placed The Andromeda Galaxy M31 (mag 3.4) culminates at around midnight local time. Mon, 02 Oct 2023 (289 days ago) in Andromeda

654.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Mon, 02 Oct 2023 at 22:28 EDT (289 days ago) in Coma Berenices

655.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Tue, 03 Oct 2023 at 01:45 EDT (288 days ago) in Taurus

656.

NGC 253 is well placed The Sculptor Galaxy NGC 253 (mag 7.1) culminates at around midnight local time. Tue, 03 Oct 2023 (288 days ago) in Sculptor

657.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from French Southern Territories. Wed, 04 Oct 2023 at 19:08 EDT (287 days ago) in Taurus

658.

The Small Magellanic Cloud is well placed The Milky Way's dwarf companion, the Small Magellanic Cloud (SMC; mag 2.7), in Tucana culminates at around midnight local time. Thu, 05 Oct 2023 (286 days ago) in Tucana

659.

NGC 300 is well placed NGC 300 (mag 8.1), a spiral galaxy in Sculptor culminates at around midnight local time. Thu, 05 Oct 2023 (286 days ago) in Sculptor

660.

October Camelopardalid meteor shower 2023 The October Camelopardalid meteor shower reaches its peak. Fri, 06 Oct 2023 (285 days ago) in Draco