541.

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. Thu, 10 Sep 2020 at 05:26 EDT (1,405 days ago) in Taurus

542.

Asteroid 19 Fortuna at opposition Asteroid 19 Fortuna makes closest approach to the Earth. Thu, 10 Sep 2020 at 12:46 EDT (1,405 days ago) in Pisces

543.

Neptune at opposition Neptune lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Fri, 11 Sep 2020 at 16:17 EDT (1,404 days ago) in Aquarius

544.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Sat, 12 Sep 2020 at 20:47 EDT (1,403 days ago) in Sagittarius

545.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 4°27'. Mon, 14 Sep 2020 at 00:43 EDT (1,401 days ago) in Cancer

546.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 14 Sep 2020 at 02:22 EDT (1,401 days ago) in Cancer

547.

Comet C/2020 K8 (Catalina-ATLAS) passes perihelion Comet C/2020 K8 (Catalina-ATLAS) makes its closest approach to the Sun. Tue, 15 Sep 2020 (1,400 days ago) in Sextans

548.

Supernova SN2020tlf discovered A new supernova has been discovered in NGC 5731. Tue, 15 Sep 2020 (1,399 days ago)

549.

Comet 88P/Howell reaches peak brightness Comet 88P/Howell is forecast to reach the brightest point in its 2020 apparition. Wed, 16 Sep 2020 (1,399 days ago) in Scorpius

550.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 17 Sep 2020 at 07:01 EDT (1,398 days ago) in Virgo

551.

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. Fri, 18 Sep 2020 at 09:47 EDT (1,397 days ago) in Virgo

552.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°25'. Fri, 18 Sep 2020 at 17:52 EDT (1,397 days ago) in Virgo

553.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Fri, 18 Sep 2020 at 23:23 EDT (1,397 days ago) in Virgo

554.

Conjunction of Mars and Eris Mars and Eris share the same right ascension, at a separation of 8°08'. Sat, 19 Sep 2020 at 00:57 EDT (1,396 days ago) in Cetus

555.

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. Sat, 19 Sep 2020 at 09:06 EDT (1,396 days ago) in Virgo

556.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from countries and territories including the Contiguous United States, Mexico, Nicaragua and Honduras amongst others. Mon, 21 Sep 2020 at 21:28 EDT (1,394 days ago) in Scorpius

557.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Tue, 22 Sep 2020 at 09:23 EDT (1,393 days ago) in Virgo

558.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Wed, 23 Sep 2020 (1,392 days ago) in Virgo

559.

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. Wed, 23 Sep 2020 at 21:55 EDT (1,392 days ago) in Sagittarius

560.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Thu, 24 Sep 2020 (1,391 days ago) in Sculptor