SkyEye

November 2018

Welcome to SkyEye, your guide to this month's celestial events.

The Calendar

Venus emerges from the solar glare as the morning star, reaching a blazing −4.7 magnitude by the end of the month. The Leonid meteor shower is worth a look mid-month, with minimal interference from moonlight.

The phases of the Moon in November 2018

Date Body Event
1
2
3
4
5
6 Mercury greatest elongation east (23.3°)
7 Moon new
8
9 Mercury 1.8° north of Antares
10
11 Moon, Saturn 1.5° apart
12
13 Moon descending node
14 Venus stationary point: retrograde → direct
Moon apogee
Venus 0.2° south of Spica
15 Moon first quarter
16 Moon, Mars occultation of Mars: visible from the southern tip of South America and Antarctica.
17 Earth Leonid meteor shower
Mercury stationary point: direct → retrograde
3 Juno opposition
18
19
20
21 Earth α Monocerotid meteor shower
22
23 Moon full
24
25 Neptune stationary point: retrograde → direct
26 Jupiter conjunction
Moon perigee
27 Moon ascending node
Mercury inferior conjunction
Moon 0.5° south of the open star cluster M44 (known as Praesepe or the Beehive Cluster)
28
29 Mercury perihelion
30 Moon last quarter

The Solar System

The word planet is derived from the Greek word for 'wanderer'. Unlike the background stars, planets seem to move around the sky, keeping mostly to a narrow track called the ecliptic, the path of the Sun across the stars. Dwarf planets and small solar-system bodies, including comets, are not so constrained, often moving far above or below the ecliptic.

The position of the Sun and planets at mid-month

Sun LibraScorpiusOphiuchus

Although Ophiuchus is not a member of the zodiac, the ecliptic passes through it.

Mercury ScorpiusOphiuchusLibra

Rising high in the western sky for observers in the southern hemisphere, Mercury reaches greatest elongation east on 6 November and then descends towards the horizon, vanishing in the Sun's glare by mid-month and undergoing inferior conjuntion on 27 November. The tiny planet can be found within 2° of the bright star Antares on 9 November. A stationary point is reached on 17 November, when Mercury goes from direct to retrograde motion in the sky.

Venus Virgo

The morning star appears early in the month and rises rapidly in the east ahead of the Sun. It moves from retrograde to direct motion on 14 November and on the same day, it appears less than half a degree away from the first-magnitude star Spica. Venus reaches maximum brightness (magnitude −4.7) on the last day of the month.

Earth and Moon

The Moon makes some close passes by planets this month. Saturn appears 1.5° south of our satellite on 11 November and five days later, the southernmost regions of South America sees Mars disappear behind the Moon's disk.

The waxing gibbous Moon sets late on 17 November but the radiant of the Leonid meteor shower also rises late so there should not be too much interference. Peak activity is predicted to be around 23:30 UT. However, the nearly Full Moon on 21 November destroys any hope of viewing the α Monocerotid meteor shower.

Mars CapricornusAquarius

Mars is visible from both hemispheres, setting around midnight. On 16 November, some regions of Earth will see the Moon occult the red planet.

Jupiter LibraScorpius

The largest planet in the solar system is at conjunction on 26 November and is not visible.

Saturn Sagittarius

Saturn is drawing closer to the Sun and conjunction. It is low in the west at sunset. Look for it near the waxing crescent Moon on 11 November.

Uranus Aries

At opposition last month, this green-coloured ice giant is visible for much of the night, not setting until after midnight.

Neptune Aquarius

A small telescope is necessary to view the most distant planet in the solar system. It sets around midnight. On 25 November, Neptune reaches a stationary point and resumes direct motion.

The Celestial Sphere

Constellations are patterns of stars in the sky. The International Astronomical Union recognises 88 different constellations. The brightest stars as seen from the Earth are easy to spot but do you know their proper names? With a set of binoculars you can look for fainter objects such as nebulae and galaxies and star clusters or some of the closest stars to the Sun.

Descriptions of the sky for observers in both the northern and southern hemispheres are available for the following times this month. Subtract one hour from your local time if summer (daylight savings) time is in effect.

Local Time Mid-month Northern Hemisphere Equator Southern Hemisphere
1730 hours (1830 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
1930 hours (2030 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
2130 hours (2230 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
2330 hours (0030 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
0130 hours (0230 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
0330 hours (0430 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S
0530 hours (0630 hours summer time) 60° N 50° N 40° N 30° N 20° N 10° N 10° S 20° S 30° S 40° S