December 1919 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

17 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

December 1919 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.1
กลุ่มดาว: Sagittarius
Angular diameter: 7.8"
Status: near greatest eastern 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: 16h02m48s
เดคลิเนชัน: -17°54'37"

Venus

Excellent
Apparent magnitude: -4.3
กลุ่มดาว: Scorpius
Angular diameter: 19.8"
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: 14h20m09s
เดคลิเนชัน: -11°15'43"

Mars

Excellent
Apparent magnitude: 1.2
กลุ่มดาว: Libra
Angular diameter: 5.7"
Status: near eastern quadrature

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

Right ascension: 12h31m41s
เดคลิเนชัน: -01°26'24"

Jupiter

Excellent
Apparent magnitude: -2.4
กลุ่มดาว: Leo
Angular diameter: 42.0"
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: 09h22m39s
เดคลิเนชัน: +16°08'17"

Saturn

Excellent
Apparent magnitude: 0.7
กลุ่มดาว: Virgo
Angular diameter: 18.3"
Status: near eastern quadrature

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

Right ascension: 10h54m50s
เดคลิเนชัน: +08°48'25"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Pisces
Angular diameter: 3.5"
Status: near western quadrature

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

Right ascension: 22h03m05s
เดคลิเนชัน: -12°44'44"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: 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: 08h54m58s
เดคลิเนชัน: +17°21'49"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Virgo
Angular diameter: 11808.2"
Status: Moon illumination 42.6%

Observation tip: Moon illumination 42.6%; good for observing lunar surface detail

Right ascension: 11h55m32s
เดคลิเนชัน: -04°08'59"