581.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 21 Jun 2020 at 02:42 EDT (1,464 days ago) in Taurus

582.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 3°52'. Mon, 22 Jun 2020 at 03:19 EDT (1,463 days ago) in Gemini

583.

Comet C/2019 U6 (Lemmon) reaches peak brightness Comet C/2019 U6 (Lemmon) is forecast to reach the brightest point in its 2020 apparition. Mon, 22 Jun 2020 (1,463 days ago) in Hydra

584.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Mon, 22 Jun 2020 (1,463 days ago) in Sagittarius

585.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 22 Jun 2020 at 22:58 EDT (1,463 days ago) in Aquarius

586.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Tue, 23 Jun 2020 at 00:17 EDT (1,462 days ago) in Gemini

587.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Tue, 23 Jun 2020 (1,462 days ago) in Corona Australis

588.

Conjunction of Jupiter and Pluto Jupiter and Pluto share the same right ascension, at a separation of 41'. Thu, 25 Jun 2020 at 09:43 EDT (1,460 days ago) in Sagittarius

589.

June Bootid meteor shower 2020 The June Bootid meteor shower reaches its peak. Sat, 27 Jun 2020 (1,458 days ago) in Bootes

590.

Asteroid 7 Iris at opposition Asteroid 7 Iris makes closest approach to the Earth. Sat, 27 Jun 2020 at 17:34 EDT (1,458 days ago) in Sagittarius

591.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Sun, 28 Jun 2020 at 04:16 EDT (1,457 days ago) in Virgo

592.

Comet C/2019 U6 (Lemmon) passes perigee Comet C/2019 U6 (Lemmon) makes its closest approach to the Earth. Sun, 28 Jun 2020 (1,457 days ago) in Sextans

593.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Sun, 28 Jun 2020 (1,457 days ago) in Ophiuchus

594.

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. Mon, 29 Jun 2020 at 22:12 EDT (1,456 days ago) in Virgo

595.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Tue, 30 Jun 2020 (1,455 days ago) in Sagittarius

596.

Supernova SN2020nvb discovered A new supernova has been discovered in NGC 4457. Tue, 30 Jun 2020 (1,454 days ago)

597.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Tue, 30 Jun 2020 at 22:47 EDT (1,455 days ago) in Gemini

598.

The cluster IC 4756 is well placed The open star cluster IC 4756 (mag 4.6) in Serpens culminates at around midnight local time. Wed, 01 Jul 2020 (1,454 days ago) in Serpens Cauda

599.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Thu, 02 Jul 2020 (1,453 days ago) in Gemini

600.

Asteroid 532 Herculina at opposition Asteroid 532 Herculina makes closest approach to the Earth. Thu, 02 Jul 2020 at 17:34 EDT (1,453 days ago) in Sagittarius