521.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from countries and territories including Russia, Canada, Alaska and China amongst others. Sat, 27 Jan 2018 at 05:21 EDT (2,303 days ago) in Taurus

522.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Sat, 27 Jan 2018 at 01:42 EDT (2,303 days ago) in Taurus

523.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 25 Jan 2018 at 06:21 EDT (2,305 days ago) in Sagittarius

524.

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, 24 Jan 2018 at 17:20 EDT (2,306 days ago) in Cetus

525.

Conjunction of Mercury and Pluto Mercury and Pluto share the same right ascension, at a separation of 1°33'. Wed, 24 Jan 2018 at 16:34 EDT (2,306 days ago) in Sagittarius

526.

The cluster NGC 2547 is well placed The open star cluster NGC 2547 (mag 4.7) in Vela culminates at around midnight local time. Tue, 23 Jan 2018 (2,307 days ago) in Vela

527.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Tue, 23 Jan 2018 at 03:21 EDT (2,307 days ago) in Capricornus

528.

The cluster NGC 2516 is well placed The open star cluster NGC 2516 (mag 3.8) in Volans culminates at around midnight local time. Sat, 20 Jan 2018 (2,310 days ago) in Carina

529.

Supernova SN2018is discovered A new supernova has been discovered in NGC 5054. Fri, 19 Jan 2018 (2,310 days ago)

530.

γ-Ursae Minorid meteor shower 2018 The γ-Ursae Minorid meteor shower reaches its peak. Fri, 19 Jan 2018 (2,311 days ago) in Ursa Minor

531.

The cluster NGC 2451 is well placed The open star cluster NGC 2451 (mag 2.8) in Puppis culminates at around midnight local time. Wed, 17 Jan 2018 (2,313 days ago) in Puppis

532.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 16 Jan 2018 at 21:18 EDT (2,314 days ago) in Sagittarius

533.

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, 16 Jan 2018 at 04:06 EDT (2,314 days ago) in Sagittarius

534.

NGC 2403 is well placed NGC 2403 (mag 8.9), a spiral galaxy in Camelopardalis culminates at around midnight local time. Mon, 15 Jan 2018 (2,315 days ago) in Camelopardalis

535.

The cluster Messier 47 is well placed The open star cluster M47 (NGC 2422; mag 4.4) in Puppis culminates at around midnight local time. Mon, 15 Jan 2018 (2,315 days ago) in Puppis

536.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 3°21'. Mon, 15 Jan 2018 at 02:22 EDT (2,315 days ago) in Sagittarius

537.

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, 14 Jan 2018 at 21:09 EDT (2,316 days ago) in Sagittarius

538.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°37'. Sun, 14 Jan 2018 at 20:56 EDT (2,316 days ago) in Sagittarius

539.

Supernova SN2018gv discovered A new supernova has been discovered in NGC 2525. Sun, 14 Jan 2018 (2,315 days ago)

540.

Conjunction of Mercury and Saturn Mercury and Saturn share the same right ascension, at a separation of 38'. Sat, 13 Jan 2018 at 01:49 EDT (2,317 days ago) in Sagittarius