281.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 21 Jun 2019 at 10:13 EDT (1,785 days ago) in Aquarius

282.

June solstice 21 June will be the longest day of 2019 in the northern hemisphere. Fri, 21 Jun 2019 at 11:47 EDT (1,785 days ago) in Taurus

283.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Sun, 23 Jun 2019 at 03:49 EDT (1,783 days ago) in Aquarius

284.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Sun, 23 Jun 2019 (1,783 days ago) in Sagittarius

285.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sun, 23 Jun 2019 at 20:56 EDT (1,783 days ago) in Gemini

286.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Mon, 24 Jun 2019 (1,782 days ago) in Corona Australis

287.

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. Tue, 25 Jun 2019 at 05:47 EDT (1,781 days ago) in Pisces

288.

Supernova SN2019iex discovered A new supernova has been discovered in NGC 7769. Tue, 25 Jun 2019 (1,780 days ago)

289.

June Bootid meteor shower 2019 The June Bootid meteor shower reaches its peak. Thu, 27 Jun 2019 (1,779 days ago) in Bootes

290.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Sat, 29 Jun 2019 (1,777 days ago) in Ophiuchus

291.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Mon, 01 Jul 2019 (1,775 days ago) in Sagittarius

292.

Asteroid 18 Melpomene at opposition Asteroid 18 Melpomene makes closest approach to the Earth. Mon, 01 Jul 2019 at 22:22 EDT (1,775 days ago) in Scutum

293.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Tue, 02 Jul 2019 at 08:23 EDT (1,774 days ago) in Gemini

294.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 02 Jul 2019 at 15:17 EDT (1,774 days ago) in Gemini

295.

Total solar eclipse There will be an eclipse of the Sun, visible from Argentina and northern Chile. Tue, 02 Jul 2019 at 15:23 EDT (1,774 days ago) in Gemini

296.

The cluster IC 4756 is well placed The open star cluster IC 4756 (mag 4.6) in Serpens culminates at around midnight local time. Tue, 02 Jul 2019 (1,774 days ago) in Serpens Cauda

297.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5'18". Thu, 04 Jul 2019 at 01:39 EDT (1,772 days ago) in Cancer

298.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 3°15'. Thu, 04 Jul 2019 at 04:35 EDT (1,772 days ago) in Cancer

299.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Thu, 04 Jul 2019 at 11:43 EDT (1,772 days ago) in Cancer

300.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Thu, 04 Jul 2019 at 18:10 EDT (1,772 days ago) in Pisces