501.

Close approach of Mars and M44 Mars and M44 pass close to each other. Fri, 02 Jun 2023 at 19:06 EDT (390 days ago) in Cancer

502.

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 (390 days ago) in Hercules

503.

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 (389 days ago) in Scorpius

504.

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 (389 days ago) in Ophiuchus

505.

Venus at dichotomy Venus reaches half phase in the evening sky. Sat, 03 Jun 2023 at 22:56 EDT (389 days ago) in Cancer

506.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 03 Jun 2023 at 23:41 EDT (389 days ago) in Scorpius

507.

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 (388 days ago) in Aries

508.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Sun, 04 Jun 2023 at 02:02 EDT (388 days ago) in Aries

509.

Venus at greatest elongation east Venus is bright and well placed in the evening sky. Sun, 04 Jun 2023 at 12:11 EDT (388 days ago) in Cancer

510.

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 (388 days ago) in Ophiuchus

511.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Mon, 05 Jun 2023 (387 days ago) in Aries

512.

Asteroid 11 Parthenope at opposition Asteroid 11 Parthenope makes closest approach to the Earth. Tue, 06 Jun 2023 at 07:58 EDT (386 days ago) in Ophiuchus

513.

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 (386 days ago) in Sagittarius

514.

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 (386 days ago) in Ophiuchus

515.

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 (385 days ago) in Ophiuchus

516.

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 (383 days ago) in Aquarius

517.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 09 Jun 2023 at 18:29 EDT (383 days ago) in Aquarius

518.

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. Sat, 10 Jun 2023 at 15:31 EDT (382 days ago) in Aquarius

519.

Daytime Arietid meteor shower 2023 The Daytime Arietid meteor shower reaches its peak. Sat, 10 Jun 2023 (381 days ago) in Aries

520.

Messier 92 is well placed The globular cluster M92 (NGC 6341; mag 6.5) in Hercules culminates at around midnight local time. Sun, 11 Jun 2023 (381 days ago) in Hercules