April 1930 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

26 sky events total, including 4 moon phases and 3 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

April 1930 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.2
กลุ่มดาว: Taurus
Angular diameter: 5.8"
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: 02h22m25s
เดคลิเนชัน: +15°32'03"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Taurus
Angular diameter: 10.3"
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: 02h34m28s
เดคลิเนชัน: +14°49'44"

Mars

Excellent
Apparent magnitude: 1.2
กลุ่มดาว: Pisces
Angular diameter: 4.4"
Status: near eastern quadrature

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

Right ascension: 23h34m09s
เดคลิเนชัน: -04°04'42"

Jupiter

Excellent
Apparent magnitude: -2.0
กลุ่มดาว: Gemini
Angular diameter: 34.7"
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: 04h51m28s
เดคลิเนชัน: +22°10'20"

Saturn

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Capricornus
Angular diameter: 17.0"
Status: near eastern quadrature

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

Right ascension: 18h51m14s
เดคลิเนชัน: -22°11'05"

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: 00h45m27s
เดคลิเนชัน: +04°10'43"

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: 10h13m07s
เดคลิเนชัน: +11°44'54"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Scorpius
Angular diameter: 12165.7"
Status: Moon illumination 96.3%

Observation tip: Moon illumination 96.3%; good for observing lunar surface detail

Right ascension: 14h54m24s
เดคลิเนชัน: -17°57'38"