501.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Mon, 09 Jan 2017 at 05:50 EDT (2,675 days ago) in Taurus

502.

Supernova SN2017jd discovered A new supernova has been discovered in IC 5334. Sun, 08 Jan 2017 (2,675 days ago)

503.

134340 Pluto at solar conjunction 134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 07 Jan 2017 at 07:55 EDT (2,677 days ago) in Sagittarius

504.

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, 05 Jan 2017 at 14:47 EDT (2,679 days ago) in Pisces

505.

The Earth at perihelion The Earth reaches its closest point to the Sun. Wed, 04 Jan 2017 at 09:17 EDT (2,680 days ago) in Pisces

506.

Quadrantid meteor shower 2017 The Quadrantid meteor shower reaches its peak. Tue, 03 Jan 2017 (2,681 days ago) in Bootes

507.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 14'. Tue, 03 Jan 2017 at 01:46 EDT (2,681 days ago) in Aquarius

508.

Lunar occultation of Mars The Moon will pass in front of Mars, creating a lunar occultation visible from countries and territories including Federated States of Micronesia, Northern Mariana Islands, Marshall Islands and Midway Atoll amongst others. Tue, 03 Jan 2017 at 01:38 EDT (2,681 days ago) in Aquarius

509.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Tue, 03 Jan 2017 at 01:38 EDT (2,681 days ago) in Aquarius

510.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from Hawaii. Mon, 02 Jan 2017 at 23:00 EDT (2,681 days ago) in Aquarius

511.

Close approach of the Moon and Neptune The Moon and Neptune pass close to each other. Mon, 02 Jan 2017 at 23:00 EDT (2,681 days ago) in Aquarius

512.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°54'. Mon, 02 Jan 2017 at 04:19 EDT (2,682 days ago) in Aquarius

513.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 02 Jan 2017 at 03:21 EDT (2,682 days ago) in Aquarius

514.

The cluster Messier 41 is well placed The open star cluster M41 (NGC 2287; mag 4.5) in Canis Major culminates at around midnight local time. Sun, 01 Jan 2017 (2,683 days ago) in Canis Major

515.

Close approach of Mars and Neptune Mars and Neptune pass within 1'07" of each other. Sun, 01 Jan 2017 at 01:53 EDT (2,683 days ago) in Aquarius

516.

Conjunction of Mars and Neptune Mars and Neptune share the same right ascension, at a separation of 1'14". Sun, 01 Jan 2017 at 01:37 EDT (2,683 days ago) in Aquarius

517.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Thu, 29 Dec 2016 (2,686 days ago) in Monoceros

518.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Thu, 29 Dec 2016 at 05:14 EDT (2,686 days ago) in Pisces

519.

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. Thu, 29 Dec 2016 at 04:07 EDT (2,686 days ago) in Sagittarius

520.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 29 Dec 2016 at 01:54 EDT (2,686 days ago) in Sagittarius