January 2100 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

27 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

January 2100 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.8
Constellation: Aquarius
Angular diameter: 5.7"
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: 20h54m17s
Declination: -19°07'29"

Venus

Excellent
Apparent magnitude: -4.1
Constellation: Pisces
Angular diameter: 16.1"
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: 22h36m06s
Declination: -10°18'07"

Mars

Excellent
Apparent magnitude: 0.0
Constellation: Taurus
Angular diameter: 9.4"
Status: near western quadrature

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

Right ascension: 02h11m56s
Declination: +14°31'25"

Jupiter

Excellent
Apparent magnitude: -2.0
Constellation: Libra
Angular diameter: 37.1"
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: 13h25m00s
Declination: -07°29'36"

Saturn

Excellent
Apparent magnitude: 0.7
Constellation: Libra
Angular diameter: 17.2"
Status: near eastern quadrature

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

Right ascension: 13h41m09s
Declination: -07°49'37"

Uranus

Fair
Apparent magnitude: 5.9
Constellation: Aries
Angular diameter: 3.5"
Status: near western quadrature

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

Right ascension: 01h06m56s
Declination: +06°26'30"

Neptune

Fair
Apparent magnitude: 7.8
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: 11h14m11s
Declination: +05°58'26"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Pisces
Angular diameter: 11607.3"
Status: Moon illumination 19.2%

Observation tip: Moon illumination 19.2%; good for observing lunar surface detail

Right ascension: 23h11m10s
Declination: -05°25'34"