December 1974 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

23 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 1974 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.1
กลุ่มดาว: Sagittarius
Angular diameter: 4.6"
Status: near inferior conjunction

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 17h15m50s
เดคลิเนชัน: -24°03'24"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Capricornus
Angular diameter: 9.9"
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: 18h08m55s
เดคลิเนชัน: -24°07'28"

Mars

Excellent
Apparent magnitude: 1.5
กลุ่มดาว: Sagittarius
Angular diameter: 3.8"
Status: near eastern quadrature

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

Right ascension: 16h03m15s
เดคลิเนชัน: -20°45'26"

Jupiter

Excellent
Apparent magnitude: -2.3
กลุ่มดาว: Pisces
Angular diameter: 38.8"
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: 22h50m55s
เดคลิเนชัน: -08°38'49"

Saturn

Excellent
Apparent magnitude: -0.3
กลุ่มดาว: Cancer
Angular diameter: 20.5"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Saturn’s rings require a telescope to see clearly

Right ascension: 07h14m18s
เดคลิเนชัน: +21°54'44"

Uranus

Fair
Apparent magnitude: 5.6
กลุ่มดาว: Libra
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 13h57m03s
เดคลิเนชัน: -11°24'05"

Neptune

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

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

Right ascension: 16h33m40s
เดคลิเนชัน: -20°25'28"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Capricornus
Angular diameter: 11718.4"
Status: Moon illumination 1.8%

Observation tip: Moon illumination 1.8%; good for observing lunar surface detail

Right ascension: 18h33m05s
เดคลิเนชัน: -20°47'05"