501.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 09 Feb 2018 at 02:00 EDT (2,350 days ago) in Ophiuchus

502.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 4°23'. Fri, 09 Feb 2018 at 00:11 EDT (2,350 days ago) in Ophiuchus

503.

NGC 2808 is well placed The globular cluster NGC 2808 (mag 6.2) in Carina culminates at around midnight local time. Thu, 08 Feb 2018 (2,351 days ago) in Carina

504.

α-Centaurid meteor shower 2018 The α-Centaurid meteor shower reaches its peak. Thu, 08 Feb 2018 (2,351 days ago) in Centaurus

505.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 07 Feb 2018 at 17:02 EDT (2,352 days ago) in Libra

506.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°17'. Wed, 07 Feb 2018 at 14:45 EDT (2,352 days ago) in Libra

507.

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. Wed, 07 Feb 2018 at 10:54 EDT (2,352 days ago) in Libra

508.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from countries and territories including Russia, China, Sweden and Finland amongst others. Thu, 01 Feb 2018 at 14:12 EDT (2,358 days ago) in Leo

509.

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. Thu, 01 Feb 2018 at 14:01 EDT (2,358 days ago) in Leo

510.

The cluster IC 2395 is well placed The open star cluster IC 2395 (mag 4.0) in Vela culminates at around midnight local time. Wed, 31 Jan 2018 (2,359 days ago) in Vela

511.

The Omicron Velorum cluster is well placed The Omicron Velorum open star cluster (IC 2391; mag 2.5) in Vela culminates at around midnight local time. Wed, 31 Jan 2018 (2,359 days ago) in Vela

512.

The Beehive cluster is well placed The Beehive open star cluster (M44, NGC 2632, also known as Praesepe; mag 3.1) culminates at around midnight local time. Wed, 31 Jan 2018 (2,359 days ago) in Cancer

513.

Total lunar eclipse There will be an eclipse of the Moon, visible from Russia, Asia, the Americas, Oceania, Alaska and Antarctica. Wed, 31 Jan 2018 at 08:30 EDT (2,359 days ago) in Cancer

514.

Blue Moon The Moon reaches full phase and is visible for much of the night. Wed, 31 Jan 2018 at 08:26 EDT (2,359 days ago) in Cancer

515.

1 Ceres at opposition 1 Ceres lies in the opposite direction to the Sun in the sky, making it closer and brighter than at other times. It is also optimally positioned to be observable for much of the night. Wed, 31 Jan 2018 at 04:29 EDT (2,359 days ago) in Cancer

516.

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. Tue, 30 Jan 2018 at 04:57 EDT (2,360 days ago) in Gemini

517.

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 (2,363 days ago) in Taurus

518.

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 (2,363 days ago) in Taurus

519.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 25 Jan 2018 at 06:21 EDT (2,365 days ago) in Sagittarius

520.

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 (2,366 days ago) in Cetus