December 2057 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

25 sky events total, including 4 moon phases and 4 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

December 2057 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.1
กลุ่มดาว: Sagittarius
Angular diameter: 8.1"
Status: near greatest eastern elongation

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

Right ascension: 16h14m06s
เดคลิเนชัน: -18°20'09"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Sagittarius
Angular diameter: 9.8"
Status: near inferior 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: 17h18m45s
เดคลิเนชัน: -23°04'33"

Mars

Excellent
Apparent magnitude: 1.2
กลุ่มดาว: Capricornus
Angular diameter: 3.9"
Status: near western quadrature

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

Right ascension: 18h14m34s
เดคลิเนชัน: -24°14'24"

Jupiter

Excellent
Apparent magnitude: -2.3
กลุ่มดาว: Pisces
Angular diameter: 38.7"
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: 22h49m52s
เดคลิเนชัน: -08°43'52"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Aries
Angular diameter: 19.2"
Status: near western quadrature

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

Right ascension: 01h52m56s
เดคลิเนชัน: +08°47'35"

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: 13h44m10s
เดคลิเนชัน: -10°10'02"

Neptune

Fair
Apparent magnitude: 7.7
กลุ่มดาว: Gemini
Angular diameter: 2.4"
Status: near western quadrature

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

Right ascension: 04h44m30s
เดคลิเนชัน: +20°42'37"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Leo
Angular diameter: 11489.4"
Status: Moon illumination 86.6%

Observation tip: Moon illumination 86.6%; good for observing lunar surface detail

Right ascension: 08h38m46s
เดคลิเนชัน: +22°07'29"