December 2027 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

December 2027 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.2
Constellation: Sagittarius
Angular diameter: 4.7"
Status: near greatest western elongation

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

Right ascension: 17h35m39s
Declination: -24°45'11"

Venus

Excellent
Apparent magnitude: -3.9
Constellation: Capricornus
Angular diameter: 12.3"
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: 19h45m23s
Declination: -23°03'41"

Mars

Excellent
Apparent magnitude: 1.2
Constellation: Capricornus
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: 19h04m19s
Declination: -23°41'50"

Jupiter

Excellent
Apparent magnitude: -2.0
Constellation: Virgo
Angular diameter: 36.6"
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: 11h48m10s
Declination: +02°34'31"

Saturn

Excellent
Apparent magnitude: 0.4
Constellation: Aries
Angular diameter: 18.9"
Status: near western quadrature

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

Right ascension: 01h21m55s
Declination: +05°47'39"

Uranus

Fair
Apparent magnitude: 5.6
Constellation: Gemini
Angular diameter: 3.8"
Status: near western quadrature

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

Right ascension: 04h22m07s
Declination: +21°26'45"

Neptune

Fair
Apparent magnitude: 7.7
Constellation: Aries
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 00h16m25s
Declination: +00°12'57"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Cancer
Angular diameter: 12751.6"
Status: Moon illumination 97.6%

Observation tip: Moon illumination 97.6%; good for observing lunar surface detail

Right ascension: 06h47m09s
Declination: +24°57'35"