April 1920 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

15 sky events total, including 4 moon phases and 2 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

April 1920 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.5
กลุ่มดาว: Pisces
Angular diameter: 8.2"
Status: near greatest eastern elongation

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

Right ascension: 23h53m47s
เดคลิเนชัน: -02°56'42"

Venus

Excellent
Apparent magnitude: -3.8
กลุ่มดาว: Aries
Angular diameter: 10.7"
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: 00h15m34s
เดคลิเนชัน: +00°00'30"

Mars

Excellent
Apparent magnitude: -1.6
กลุ่มดาว: Scorpius
Angular diameter: 15.6"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 14h06m36s
เดคลิเนชัน: -10°56'28"

Jupiter

Excellent
Apparent magnitude: -2.2
กลุ่มดาว: Leo
Angular diameter: 39.3"
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: 08h43m49s
เดคลิเนชัน: +19°02'58"

Saturn

Excellent
Apparent magnitude: 0.5
กลุ่มดาว: Virgo
Angular diameter: 19.2"
Status: near western quadrature

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

Right ascension: 10h31m10s
เดคลิเนชัน: +11°25'15"

Uranus

Fair
Apparent magnitude: 6.0
กลุ่มดาว: Pisces
Angular diameter: 3.4"
Status: near eastern quadrature

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

Right ascension: 22h26m21s
เดคลิเนชัน: -10°33'59"

Neptune

Fair
Apparent magnitude: 7.9
กลุ่มดาว: Leo
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 08h44m42s
เดคลิเนชัน: +18°04'11"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Pisces
Angular diameter: 12071.1"
Status: Moon illumination 18.2%

Observation tip: Moon illumination 18.2%; good for observing lunar surface detail

Right ascension: 22h17m57s
เดคลิเนชัน: -05°14'45"