April 1957 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

22 sky events total, including 4 moon phases and 3 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

April 1957 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.0
Constellation: Taurus
Angular diameter: 7.7"
Status: near greatest western elongation

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 02h44m01s
Declination: +18°44'03"

Venus

Excellent
Apparent magnitude: -3.9
Constellation: Aries
Angular diameter: 9.7"
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: 01h33m48s
Declination: +08°35'55"

Mars

Excellent
Apparent magnitude: 1.5
Constellation: Gemini
Angular diameter: 4.7"
Status: near western quadrature

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

Right ascension: 05h05m51s
Declination: +24°07'50"

Jupiter

Excellent
Apparent magnitude: -2.4
Constellation: Virgo
Angular diameter: 43.2"
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: 11h38m43s
Declination: +03°58'07"

Saturn

Excellent
Apparent magnitude: 0.3
Constellation: Sagittarius
Angular diameter: 17.8"
Status: near eastern quadrature

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

Right ascension: 16h51m08s
Declination: -20°38'27"

Uranus

Fair
Apparent magnitude: 5.5
Constellation: Leo
Angular diameter: 3.8"
Status: near western quadrature

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

Right ascension: 08h21m14s
Declination: +20°07'10"

Neptune

Fair
Apparent magnitude: 7.9
Constellation: Libra
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 13h59m36s
Declination: -10°16'29"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 12580.0"
Status: Moon illumination 99.7%

Observation tip: Moon illumination 99.7%; good for observing lunar surface detail

Right ascension: 13h54m22s
Declination: -13°29'32"