December 1918 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 1918 mid-month observing conditions

Mercury

Good
Apparent magnitude: 2.7
กลุ่มดาว: Capricornus
Angular diameter: 9.6"
Status: near superior conjunction

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 18h02m38s
เดคลิเนชัน: -22°37'07"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Sagittarius
Angular diameter: 9.8"
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: 17h48m11s
เดคลิเนชัน: -23°52'32"

Mars

Excellent
Apparent magnitude: 1.2
กลุ่มดาว: Capricornus
Angular diameter: 4.5"
Status: near western quadrature

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

Right ascension: 19h52m07s
เดคลิเนชัน: -22°11'49"

Jupiter

Excellent
Apparent magnitude: -2.7
กลุ่มดาว: Cancer
Angular diameter: 46.5"
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: 06h57m06s
เดคลิเนชัน: +22°47'23"

Saturn

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Virgo
Angular diameter: 19.0"
Status: near eastern quadrature

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

Right ascension: 10h03m24s
เดคลิเนชัน: +13°18'28"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Aquarius
Angular diameter: 3.4"
Status: near western quadrature

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

Right ascension: 21h48m12s
เดคลิเนชัน: -14°02'33"

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: 08h45m46s
เดคลิเนชัน: +17°54'19"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Taurus
Angular diameter: 12774.8"
Status: Moon illumination 89.4%

Observation tip: Moon illumination 89.4%; good for observing lunar surface detail

Right ascension: 02h43m58s
เดคลิเนชัน: +18°33'35"