December 1930 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

22 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 1930 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
กลุ่มดาว: Capricornus
Angular diameter: 6.0"
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: 18h50m52s
เดคลิเนชัน: -25°06'29"

Venus

Excellent
Apparent magnitude: -4.8
กลุ่มดาว: Scorpius
Angular diameter: 50.7"
Status: near greatest eastern 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: 15h21m21s
เดคลิเนชัน: -15°53'57"

Mars

Excellent
Apparent magnitude: -0.4
กลุ่มดาว: Leo
Angular diameter: 11.3"
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: 09h20m37s
เดคลิเนชัน: +18°44'33"

Jupiter

Excellent
Apparent magnitude: -2.7
กลุ่มดาว: Cancer
Angular diameter: 46.0"
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: 07h19m34s
เดคลิเนชัน: +22°17'48"

Saturn

Excellent
Apparent magnitude: 0.6
กลุ่มดาว: Capricornus
Angular diameter: 15.2"
Status: near western quadrature

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

Right ascension: 18h50m51s
เดคลิเนชัน: -22°33'31"

Uranus

Fair
Apparent magnitude: 5.8
กลุ่มดาว: Aries
Angular diameter: 3.6"
Status: near western quadrature

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

Right ascension: 00h43m12s
เดคลิเนชัน: +03°54'39"

Neptune

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

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

Right ascension: 10h31m19s
เดคลิเนชัน: +10°02'54"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Libra
Angular diameter: 12396.8"
Status: Moon illumination 26.7%

Observation tip: Moon illumination 26.7%; good for observing lunar surface detail

Right ascension: 13h14m37s
เดคลิเนชัน: -07°43'36"