December 2055 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

22 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 2055 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
Constellation: Capricornus
Angular diameter: 6.0"
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: 18h54m33s
Declination: -25°01'26"

Venus

Excellent
Apparent magnitude: -4.1
Constellation: Scorpius
Angular diameter: 14.7"
Status: near inferior conjunction

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: 14h49m38s
Declination: -14°02'51"

Mars

Excellent
Apparent magnitude: 1.3
Constellation: Sagittarius
Angular diameter: 3.8"
Status: near eastern quadrature

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

Right ascension: 17h08m39s
Declination: -23°22'56"

Jupiter

Excellent
Apparent magnitude: -1.9
Constellation: Capricornus
Angular diameter: 32.3"
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: 18h59m43s
Declination: -22°50'52"

Saturn

Excellent
Apparent magnitude: 0.8
Constellation: Aries
Angular diameter: 18.0"
Status: near western quadrature

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

Right ascension: 00h14m38s
Declination: -01°05'15"

Uranus

Fair
Apparent magnitude: 5.6
Constellation: Libra
Angular diameter: 3.8"
Status: near eastern quadrature

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

Right ascension: 13h10m02s
Declination: -06°43'58"

Neptune

Fair
Apparent magnitude: 7.7
Constellation: Gemini
Angular diameter: 2.4"
Status: near western quadrature

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

Right ascension: 04h25m08s
Declination: +19°58'47"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Scorpius
Angular diameter: 12722.3"
Status: Moon illumination 14.9%

Observation tip: Moon illumination 14.9%; good for observing lunar surface detail

Right ascension: 14h28m52s
Declination: -09°16'23"