1621.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Sun, 28 May 2023 (400 days ago) in Scorpius

1622.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 29 May 2023 at 03:44 EDT (399 days ago) in Aries

1623.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Tue, 30 May 2023 at 15:30 EDT (398 days ago) in Cancer

1624.

Close approach of Mars and M44 Mars and M44 pass close to each other. Fri, 02 Jun 2023 at 19:06 EDT (395 days ago) in Cancer

1625.

The Great Globular Cluster in Hercules is well placed The Great Globular Cluster in Hercules (M13, NGC 6205; mag 5.8) culminates at around midnight local time. Fri, 02 Jun 2023 (395 days ago) in Hercules

1626.

Lunar occultation of Delta Scorpii The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from countries and territories including Antarctica, Australia, Chile and New Zealand amongst others. Sat, 03 Jun 2023 at 05:56 EDT (394 days ago) in Scorpius

1627.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Sat, 03 Jun 2023 (394 days ago) in Ophiuchus

1628.

Venus at dichotomy Venus reaches half phase in the evening sky. Sat, 03 Jun 2023 at 22:56 EDT (394 days ago) in Cancer

1629.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 03 Jun 2023 at 23:41 EDT (394 days ago) in Scorpius

1630.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 2°54'. Sun, 04 Jun 2023 at 00:34 EDT (393 days ago) in Aries

1631.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Sun, 04 Jun 2023 at 02:02 EDT (393 days ago) in Aries

1632.

Venus at greatest elongation east Venus is bright and well placed in the evening sky. Sun, 04 Jun 2023 at 12:11 EDT (393 days ago) in Cancer

1633.

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. Sun, 04 Jun 2023 at 21:58 EDT (393 days ago) in Ophiuchus

1634.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Mon, 05 Jun 2023 (392 days ago) in Aries

1635.

Asteroid 11 Parthenope at opposition Asteroid 11 Parthenope makes closest approach to the Earth. Tue, 06 Jun 2023 at 07:58 EDT (391 days ago) in Ophiuchus

1636.

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. Tue, 06 Jun 2023 at 19:05 EDT (391 days ago) in Sagittarius

1637.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Tue, 06 Jun 2023 (391 days ago) in Ophiuchus

1638.

Messier 62 is well placed The globular cluster M62 (NGC 6266; mag 6.4) in Ophiuchus culminates at around midnight local time. Wed, 07 Jun 2023 (390 days ago) in Ophiuchus

1639.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°58'. Fri, 09 Jun 2023 at 16:22 EDT (388 days ago) in Aquarius

1640.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 09 Jun 2023 at 18:29 EDT (388 days ago) in Aquarius