December 1938 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

17 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

December 1938 mid-month observing conditions

Mercury

Fair
Apparent magnitude: 5.5
Constellation: Sagittarius
Angular diameter: 9.9"
Status: near greatest eastern elongation

Observation tip: Binoculars are recommended; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 17h21m03s
Declination: -21°10'43"

Venus

Excellent
Apparent magnitude: -4.9
Constellation: Scorpius
Angular diameter: 48.7"
Status: near greatest eastern 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: 15h12m43s
Declination: -15°15'29"

Mars

Excellent
Apparent magnitude: 1.6
Constellation: Scorpius
Angular diameter: 4.5"
Status: near eastern quadrature

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

Right ascension: 14h00m19s
Declination: -11°10'16"

Jupiter

Excellent
Apparent magnitude: -2.2
Constellation: Aquarius
Angular diameter: 37.0"
Status: near western 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: 21h59m47s
Declination: -13°21'30"

Saturn

Excellent
Apparent magnitude: 0.6
Constellation: Aries
Angular diameter: 18.4"
Status: near western quadrature

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

Right ascension: 00h45m19s
Declination: +02°04'30"

Uranus

Fair
Apparent magnitude: 5.7
Constellation: Taurus
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 02h48m23s
Declination: +15°49'16"

Neptune

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

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

Right ascension: 11h37m13s
Declination: +03°42'55"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 12241.6"
Status: Moon illumination 39.9%

Observation tip: Moon illumination 39.9%; good for observing lunar surface detail

Right ascension: 12h09m52s
Declination: -04°57'08"