521.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 11 Oct 2018 at 19:27 EDT (2,135 days ago) in Libra

522.

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, 11 Oct 2018 at 19:32 EDT (2,135 days ago) in Libra

523.

Conjunction of Venus and Mercury Venus and Mercury share the same right ascension, at a separation of 6°48'. Sun, 14 Oct 2018 at 11:14 EDT (2,132 days ago) in Virgo

524.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°47'. Sun, 14 Oct 2018 at 22:45 EDT (2,132 days ago) in Sagittarius

525.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 14 Oct 2018 at 22:57 EDT (2,132 days ago) in Sagittarius

526.

The Triangulum Galaxy is well placed The Triangulum Galaxy M33 (mag 5.8) culminates at around midnight local time. Mon, 15 Oct 2018 (2,131 days ago) in Triangulum

527.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Tue, 16 Oct 2018 at 05:12 EDT (2,130 days ago) in Libra

528.

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. Tue, 16 Oct 2018 at 14:02 EDT (2,130 days ago) in Sagittarius

529.

136199 Eris at opposition 136199 Eris lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Wed, 17 Oct 2018 at 01:19 EDT (2,129 days ago) in Cetus

530.

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. Wed, 17 Oct 2018 at 15:15 EDT (2,129 days ago) in Capricornus

531.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 18 Oct 2018 at 08:12 EDT (2,128 days ago) in Capricornus

532.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 1°56'. Thu, 18 Oct 2018 at 09:01 EDT (2,128 days ago) in Capricornus

533.

ε-Geminid meteor shower 2018 The ε-Geminid meteor shower reaches its peak. Thu, 18 Oct 2018 (2,128 days ago) in Gemini

534.

136108 Haumea at solar conjunction 136108 Haumea is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 18 Oct 2018 at 19:30 EDT (2,128 days ago) in Bootes

535.

Orionid meteor shower 2018 The Orionid meteor shower reaches its peak. Sun, 21 Oct 2018 (2,125 days ago) in Orion

536.

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. Sun, 21 Oct 2018 at 13:41 EDT (2,125 days ago) in Aquarius

537.

Supernova SN2018hna discovered A new supernova has been discovered in UGC 7534. Sun, 21 Oct 2018 (2,124 days ago)

538.

Uranus at opposition Uranus lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 23 Oct 2018 at 20:38 EDT (2,123 days ago) in Aries

539.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 24 Oct 2018 at 12:45 EDT (2,122 days ago) in Pisces

540.

Leonis Minorid meteor shower 2018 The Leonis Minorid meteor shower reaches its peak. Wed, 24 Oct 2018 (2,122 days ago) in Leo Minor