321.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Sun, 18 Jun 2017 (2,556 days ago) in Ophiuchus

322.

Asteroid 6 Hebe at opposition Asteroid 6 Hebe makes closest approach to the Earth. Sun, 18 Jun 2017 at 00:46 EDT (2,556 days ago) in Ophiuchus

323.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Sat, 17 Jun 2017 (2,557 days ago) in Ara

324.

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, 17 Jun 2017 at 07:33 EDT (2,557 days ago) in Aquarius

325.

The Butterfly cluster is well placed The Butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius culminates at around midnight local time. Fri, 16 Jun 2017 (2,558 days ago) in Scorpius

326.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from Antarctica. Fri, 16 Jun 2017 at 09:03 EDT (2,558 days ago) in Aquarius

327.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 16 Jun 2017 at 07:41 EDT (2,558 days ago) in Aquarius

328.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Thu, 15 Jun 2017 (2,559 days ago) in Scorpius

329.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Thu, 15 Jun 2017 at 06:09 EDT (2,559 days ago) in Ophiuchus

330.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Mon, 12 Jun 2017 at 20:42 EDT (2,562 days ago) in Aries

331.

Supernova SN2017erp discovered A new supernova has been discovered in NGC 5861. Mon, 12 Jun 2017 (2,561 days ago)

332.

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 2017 (2,563 days ago) in Hercules

333.

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. Sat, 10 Jun 2017 at 11:59 EDT (2,564 days ago) in Sagittarius

334.

Daytime Arietid meteor shower 2017 The Daytime Arietid meteor shower reaches its peak. Sat, 10 Jun 2017 (2,564 days ago) in Aries

335.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 09 Jun 2017 at 21:33 EDT (2,565 days ago) in Ophiuchus

336.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°04'. Fri, 09 Jun 2017 at 21:03 EDT (2,565 days ago) in Ophiuchus

337.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Fri, 09 Jun 2017 at 10:12 EDT (2,565 days ago) in Virgo

338.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 09 Jun 2017 at 09:09 EDT (2,565 days ago) in Ophiuchus

339.

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. Thu, 08 Jun 2017 at 18:21 EDT (2,566 days ago) in Ophiuchus

340.

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 2017 (2,567 days ago) in Ophiuchus