May 1931 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

24 sky events total, including 5 moon phases and 1 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

May 1931 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 1.7
กลุ่มดาว: Taurus
Angular diameter: 10.6"
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: 02h09m31s
เดคลิเนชัน: +10°06'25"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Aries
Angular diameter: 12.1"
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: 01h26m26s
เดคลิเนชัน: +07°10'42"

Mars

Excellent
Apparent magnitude: 0.9
กลุ่มดาว: Leo
Angular diameter: 6.5"
Status: near western quadrature

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

Right ascension: 09h18m42s
เดคลิเนชัน: +17°31'11"

Jupiter

Excellent
Apparent magnitude: -1.9
กลุ่มดาว: Cancer
Angular diameter: 34.1"
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: 07h14m15s
เดคลิเนชัน: +22°41'21"

Saturn

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Capricornus
Angular diameter: 17.5"
Status: near eastern quadrature

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

Right ascension: 19h39m53s
เดคลิเนชัน: -21°14'15"

Uranus

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

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

Right ascension: 01h05m17s
เดคลิเนชัน: +06°16'13"

Neptune

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

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

Right ascension: 10h20m49s
เดคลิเนชัน: +11°05'08"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aries
Angular diameter: 11619.9"
Status: Moon illumination 6.9%

Observation tip: Moon illumination 6.9%; good for observing lunar surface detail

Right ascension: 01h23m42s
เดคลิเนชัน: +09°40'56"