December 1900 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

25 sky events total, including 4 moon phases and 5 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 1900 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.5
Constellation: Sagittarius
Angular diameter: 5.8"
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: 16h05m16s
Declination: -19°15'21"

Venus

Excellent
Apparent magnitude: -4.0
Constellation: Scorpius
Angular diameter: 12.8"
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: 15h11m04s
Declination: -15°56'38"

Mars

Excellent
Apparent magnitude: 0.3
Constellation: Virgo
Angular diameter: 8.6"
Status: near eastern quadrature

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

Right ascension: 10h42m12s
Declination: +11°06'36"

Jupiter

Excellent
Apparent magnitude: -1.8
Constellation: Sagittarius
Angular diameter: 31.5"
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: 17h25m41s
Declination: -22°53'06"

Saturn

Excellent
Apparent magnitude: 0.5
Constellation: Capricornus
Angular diameter: 15.1"
Status: near western quadrature

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

Right ascension: 18h24m44s
Declination: -22°42'26"

Uranus

Fair
Apparent magnitude: 5.7
Constellation: Sagittarius
Angular diameter: 3.5"
Status: near eastern quadrature

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

Right ascension: 16h47m35s
Declination: -22°23'51"

Neptune

Fair
Apparent magnitude: 7.8
Constellation: Gemini
Angular diameter: 2.4"
Status: near eastern quadrature

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

Right ascension: 05h51m21s
Declination: +22°11'00"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 11504.6"
Status: Moon illumination 40.2%

Observation tip: Moon illumination 40.2%; good for observing lunar surface detail

Right ascension: 12h07m45s
Declination: -05°41'26"