October 1931 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

24 sky events total, including 4 moon phases and 2 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 1931 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.5
Constellation: Libra
Angular diameter: 4.8"
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: 13h08m20s
Declination: -05°58'03"

Venus

Excellent
Apparent magnitude: -3.9
Constellation: Libra
Angular diameter: 9.9"
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: 13h54m22s
Declination: -10°54'08"

Mars

Excellent
Apparent magnitude: 1.5
Constellation: Scorpius
Angular diameter: 4.1"
Status: near western quadrature

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

Right ascension: 15h05m36s
Declination: -17°49'59"

Jupiter

Excellent
Apparent magnitude: -2.0
Constellation: Leo
Angular diameter: 34.7"
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: 09h22m45s
Declination: +15°58'53"

Saturn

Excellent
Apparent magnitude: 0.5
Constellation: Capricornus
Angular diameter: 16.6"
Status: near western quadrature

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

Right ascension: 19h14m05s
Declination: -22°20'44"

Uranus

Fair
Apparent magnitude: 5.8
Constellation: Aries
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 01h04m38s
Declination: +06°09'07"

Neptune

Fair
Apparent magnitude: 8.0
Constellation: Virgo
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 10h36m22s
Declination: +09°34'55"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Sagittarius
Angular diameter: 12574.6"
Status: Moon illumination 16.6%

Observation tip: Moon illumination 16.6%; good for observing lunar surface detail

Right ascension: 16h23m35s
Declination: -26°22'22"