December 1979 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

22 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 1979 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
กลุ่มดาว: Sagittarius
Angular diameter: 5.8"
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: 16h05m46s
เดคลิเนชัน: -19°17'46"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Capricornus
Angular diameter: 11.7"
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: 19h29m12s
เดคลิเนชัน: -23°31'46"

Mars

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Virgo
Angular diameter: 8.4"
Status: near eastern quadrature

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

Right ascension: 10h49m15s
เดคลิเนชัน: +10°20'20"

Jupiter

Excellent
Apparent magnitude: -2.2
กลุ่มดาว: Virgo
Angular diameter: 38.8"
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: 10h47m50s
เดคลิเนชัน: +08°46'55"

Saturn

Excellent
Apparent magnitude: 1.0
กลุ่มดาว: Virgo
Angular diameter: 17.6"
Status: near eastern quadrature

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

Right ascension: 11h50m37s
เดคลิเนชัน: +03°17'07"

Uranus

Fair
Apparent magnitude: 5.7
กลุ่มดาว: Scorpius
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 15h23m20s
เดคลิเนชัน: -18°17'26"

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: 17h18m09s
เดคลิเนชัน: -21°44'50"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Libra
Angular diameter: 11733.1"
Status: Moon illumination 19.7%

Observation tip: Moon illumination 19.7%; good for observing lunar surface detail

Right ascension: 13h57m27s
เดคลิเนชัน: -07°26'16"