541.

Supernova SN2018gj discovered A new supernova has been discovered in NGC 6217. Thu, 11 Jan 2018 (2,324 days ago)

542.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 11 Jan 2018 at 07:39 EDT (2,325 days ago) in Libra

543.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 4°33'. Thu, 11 Jan 2018 at 05:02 EDT (2,325 days ago) in Libra

544.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 11 Jan 2018 at 03:24 EDT (2,325 days ago) in Libra

545.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°20'. Thu, 11 Jan 2018 at 00:57 EDT (2,325 days ago) in Libra

546.

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. Tue, 09 Jan 2018 at 10:58 EDT (2,327 days ago) in Sagittarius

547.

Venus at superior solar conjunction Venus passes around the far side of the Sun. Tue, 09 Jan 2018 at 02:36 EDT (2,327 days ago) in Sagittarius

548.

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. Mon, 08 Jan 2018 at 17:25 EDT (2,328 days ago) in Virgo

549.

Conjunction of Jupiter and Mars Jupiter and Mars share the same right ascension, at a separation of 12'. Sat, 06 Jan 2018 at 22:40 EDT (2,330 days ago) in Libra

550.

Close approach of Jupiter and Mars Jupiter and Mars pass within 12' of each other. Sat, 06 Jan 2018 at 19:27 EDT (2,330 days ago) in Libra

551.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from countries and territories including Canada, Greenland, Alaska and Svalbard amongst others. Fri, 05 Jan 2018 at 03:11 EDT (2,331 days ago) in Leo

552.

Quadrantid meteor shower 2018 The Quadrantid meteor shower reaches its peak. Wed, 03 Jan 2018 (2,333 days ago) in Bootes

553.

The Earth at perihelion The Earth reaches its closest point to the Sun. Wed, 03 Jan 2018 at 00:34 EDT (2,333 days ago) in Pisces

554.

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. Tue, 02 Jan 2018 (2,334 days ago) in Canis Major

555.

Asteroid 8 Flora at opposition Asteroid 8 Flora makes closest approach to the Earth. Tue, 02 Jan 2018 at 14:10 EDT (2,334 days ago) in Gemini

556.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Tue, 02 Jan 2018 at 10:24 EDT (2,334 days ago) in Pisces

557.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 01 Jan 2018 at 21:24 EDT (2,335 days ago) in Gemini

558.

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. Mon, 01 Jan 2018 at 20:55 EDT (2,335 days ago) in Gemini

559.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 01 Jan 2018 at 19:51 EDT (2,335 days ago) in Ophiuchus

560.

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, 01 Jan 2018 at 16:48 EDT (2,335 days ago) in Gemini