October 1917 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

20 sky events total, including 4 moon phases and 1 planetary events.

Daily Sky Events

All times are in local time (Asia/Shanghai)

Group Date Sunrise/Sunset Moonrise/Moonset Moon Phase Sky Events

Planetary outlook

October 1917 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.1
Constellation: Libra
Angular diameter: 5.5"
Status: near inferior conjunction

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 12h31m03s
Declination: -01°13'34"

Venus

Excellent
Apparent magnitude: -4.1
Constellation: Sagittarius
Angular diameter: 16.5"
Status: near greatest western elongation

Observation tip: Very bright, easily visible to the naked eye; Venus is the brightest planet and is best seen at dusk or dawn

Right ascension: 16h04m18s
Declination: -22°50'08"

Mars

Excellent
Apparent magnitude: 1.3
Constellation: Leo
Angular diameter: 5.1"
Status: near eastern quadrature

Observation tip: Visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 09h29m53s
Declination: +16°15'12"

Jupiter

Excellent
Apparent magnitude: -2.7
Constellation: Gemini
Angular diameter: 45.5"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Its moons are easy to spot and it is excellent for telescope observing

Right ascension: 04h39m00s
Declination: +21°13'06"

Saturn

Excellent
Apparent magnitude: 0.4
Constellation: Leo
Angular diameter: 17.6"
Status: near eastern quadrature

Observation tip: Visible to the naked eye; Saturn’s rings require a telescope to see clearly

Right ascension: 09h02m19s
Declination: +17°30'02"

Uranus

Fair
Apparent magnitude: 5.8
Constellation: Aquarius
Angular diameter: 3.6"
Status: near western quadrature

Observation tip: Binoculars are recommended; Binoculars or a telescope are recommended

Right ascension: 21h30m11s
Declination: -15°33'22"

Neptune

Fair
Apparent magnitude: 7.9
Constellation: Leo
Angular diameter: 2.3"
Status: near eastern quadrature

Observation tip: A telescope is required; A telescope is required; Neptune appears blue-green

Right ascension: 08h37m04s
Declination: +18°22'46"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 11574.9"
Status: Moon illumination 1.4%

Observation tip: Moon illumination 1.4%; good for observing lunar surface detail

Right ascension: 12h23m34s
Declination: -07°59'43"