December 1949 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

24 sky events total, including 4 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

December 1949 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.7
กลุ่มดาว: Capricornus
Angular diameter: 5.1"
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: 18h23m38s
เดคลิเนชัน: -25°32'41"

Venus

Excellent
Apparent magnitude: -4.8
กลุ่มดาว: Aquarius
Angular diameter: 34.2"
Status: near superior 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: 20h40m16s
เดคลิเนชัน: -20°17'39"

Mars

Excellent
Apparent magnitude: 0.9
กลุ่มดาว: Virgo
Angular diameter: 6.8"
Status: near eastern quadrature

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

Right ascension: 11h46m07s
เดคลิเนชัน: +03°55'35"

Jupiter

Excellent
Apparent magnitude: -2.0
กลุ่มดาว: Aquarius
Angular diameter: 34.0"
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: 20h20m57s
เดคลิเนชัน: -20°05'47"

Saturn

Excellent
Apparent magnitude: 0.8
กลุ่มดาว: Virgo
Angular diameter: 18.0"
Status: near eastern quadrature

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

Right ascension: 11h23m26s
เดคลิเนชัน: +06°02'20"

Uranus

Fair
Apparent magnitude: 5.5
กลุ่มดาว: Cancer
Angular diameter: 3.9"
Status: near eastern quadrature

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

Right ascension: 06h14m53s
เดคลิเนชัน: +23°40'12"

Neptune

Fair
Apparent magnitude: 8.0
กลุ่มดาว: Libra
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 13h05m09s
เดคลิเนชัน: -05°13'50"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Libra
Angular diameter: 12664.4"
Status: Moon illumination 28.8%

Observation tip: Moon illumination 28.8%; good for observing lunar surface detail

Right ascension: 13h05m24s
เดคลิเนชัน: -07°19'00"