January 1921 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

16 sky events total, including 5 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 1921 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.3
Constellation: Capricornus
Angular diameter: 4.7"
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: 19h41m26s
Declination: -23°23'00"

Venus

Excellent
Apparent magnitude: -4.3
Constellation: Pisces
Angular diameter: 18.8"
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: 22h45m17s
Declination: -09°01'41"

Mars

Excellent
Apparent magnitude: 1.1
Constellation: Pisces
Angular diameter: 4.8"
Status: near western quadrature

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

Right ascension: 22h38m10s
Declination: -09°35'30"

Jupiter

Excellent
Apparent magnitude: -2.3
Constellation: Virgo
Angular diameter: 41.3"
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: 11h20m32s
Declination: +05°39'13"

Saturn

Excellent
Apparent magnitude: 0.8
Constellation: Virgo
Angular diameter: 18.7"
Status: near eastern quadrature

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

Right ascension: 11h44m01s
Declination: +04°07'25"

Uranus

Fair
Apparent magnitude: 6.0
Constellation: Pisces
Angular diameter: 3.4"
Status: near western quadrature

Observation tip: A telescope is required; Binoculars or a telescope are recommended

Right ascension: 22h22m28s
Declination: -10°56'29"

Neptune

Fair
Apparent magnitude: 7.8
Constellation: Leo
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 09h01m23s
Declination: +16°59'52"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Pisces
Angular diameter: 11764.6"
Status: Moon illumination 27.8%

Observation tip: Moon illumination 27.8%; good for observing lunar surface detail

Right ascension: 23h47m25s
Declination: +01°44'56"