December 1985 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

26 sky events total, including 4 moon phases and 3 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

December 1985 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.2
กลุ่มดาว: Sagittarius
Angular diameter: 7.0"
Status: near greatest eastern 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: 16h00m56s
เดคลิเนชัน: -18°08'17"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Sagittarius
Angular diameter: 9.9"
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: 16h52m31s
เดคลิเนชัน: -22°11'11"

Mars

Excellent
Apparent magnitude: 1.6
กลุ่มดาว: Libra
Angular diameter: 4.6"
Status: near eastern quadrature

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

Right ascension: 13h53m42s
เดคลิเนชัน: -10°29'07"

Jupiter

Excellent
Apparent magnitude: -2.1
กลุ่มดาว: Aquarius
Angular diameter: 35.3"
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: 21h10m07s
เดคลิเนชัน: -17°09'51"

Saturn

Excellent
Apparent magnitude: 0.5
กลุ่มดาว: Sagittarius
Angular diameter: 15.3"
Status: near eastern quadrature

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

Right ascension: 16h06m29s
เดคลิเนชัน: -19°03'09"

Uranus

Fair
Apparent magnitude: 5.7
กลุ่มดาว: Sagittarius
Angular diameter: 3.5"
Status: near eastern quadrature

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

Right ascension: 17h09m53s
เดคลิเนชัน: -22°59'53"

Neptune

Fair
Apparent magnitude: 8.0
กลุ่มดาว: Capricornus
Angular diameter: 2.2"
Status: near western quadrature

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

Right ascension: 18h12m44s
เดคลิเนชัน: -22°20'43"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aquarius
Angular diameter: 12507.3"
Status: Moon illumination 12.1%

Observation tip: Moon illumination 12.1%; good for observing lunar surface detail

Right ascension: 20h28m01s
เดคลิเนชัน: -24°23'06"