4001.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Thu, 22 Jun 2028 (1,446 days away) in Sagittarius

4002.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 3°47'. Fri, 23 Jun 2028 at 02:28 EDT (1,447 days away) in Taurus

4003.

Asteroid 153814 2001 WN5 at opposition Asteroid 153814 2001 WN5 makes closest approach to the Earth. Fri, 23 Jun 2028 at 10:22 EDT (1,447 days away) in Scorpius

4004.

Conjunction of Mars and Uranus Mars and Uranus share the same right ascension, at a separation of 11'. Fri, 23 Jun 2028 at 17:45 EDT (1,447 days away) in Taurus

4005.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Fri, 23 Jun 2028 (1,447 days away) in Corona Australis

4006.

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, 26 Jun 2028 at 00:23 EDT (1,450 days away) in Leo

4007.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 26 Jun 2028 at 23:32 EDT (1,450 days away) in Taurus

4008.

June Bootid meteor shower 2028 The June Bootid meteor shower reaches its peak. Tue, 27 Jun 2028 (1,451 days away) in Bootes

4009.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 28 Jun 2028 at 01:36 EDT (1,452 days away) in Leo

4010.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 6°17'. Wed, 28 Jun 2028 at 06:17 EDT (1,452 days away) in Leo

4011.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Wed, 28 Jun 2028 (1,452 days away) in Ophiuchus

4012.

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. Thu, 29 Jun 2028 at 08:11 EDT (1,453 days away) in Virgo

4013.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Fri, 30 Jun 2028 (1,454 days away) in Sagittarius

4014.

The cluster IC 4756 is well placed The open star cluster IC 4756 (mag 4.6) in Serpens culminates at around midnight local time. Sat, 01 Jul 2028 (1,455 days away) in Serpens Cauda

4015.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Sat, 01 Jul 2028 (1,456 days away) in Taurus

4016.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Sun, 02 Jul 2028 at 00:03 EDT (1,456 days away) in Taurus

4017.

Comet 22P/Kopff reaches peak brightness Comet 22P/Kopff is forecast to reach the brightest point in its 2028 apparition. Sun, 02 Jul 2028 (1,456 days away) in Ophiuchus

4018.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Mon, 03 Jul 2028 at 18:18 EDT (1,457 days away) in Pisces

4019.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Spain, Morocco, Portugal and Canada amongst others. Mon, 03 Jul 2028 at 20:40 EDT (1,457 days away) in Scorpius

4020.

Venus at greatest brightness Venus reaches its greatest brightness in the dawn sky. Wed, 05 Jul 2028 at 23:49 EDT (1,459 days away) in Taurus