December 2016 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

21 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 2016 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.2
กลุ่มดาว: Capricornus
Angular diameter: 7.3"
Status: near superior 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: 18h59m25s
เดคลิเนชัน: -24°10'34"

Venus

Excellent
Apparent magnitude: -4.2
กลุ่มดาว: Aquarius
Angular diameter: 18.7"
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: 20h46m12s
เดคลิเนชัน: -20°17'17"

Mars

Excellent
Apparent magnitude: 0.7
กลุ่มดาว: Aquarius
Angular diameter: 6.1"
Status: near western quadrature

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

Right ascension: 21h57m17s
เดคลิเนชัน: -13°43'13"

Jupiter

Excellent
Apparent magnitude: -1.8
กลุ่มดาว: Libra
Angular diameter: 33.9"
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: 13h12m03s
เดคลิเนชัน: -06°18'43"

Saturn

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Sagittarius
Angular diameter: 15.1"
Status: near eastern quadrature

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

Right ascension: 17h14m17s
เดคลิเนชัน: -21°43'20"

Uranus

Fair
Apparent magnitude: 5.8
กลุ่มดาว: Aries
Angular diameter: 3.6"
Status: near western quadrature

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

Right ascension: 01h17m12s
เดคลิเนชัน: +07°29'32"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Pisces
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 22h45m15s
เดคลิเนชัน: -08°49'57"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Cancer
Angular diameter: 12844.1"
Status: Moon illumination 98.4%

Observation tip: Moon illumination 98.4%; good for observing lunar surface detail

Right ascension: 06h31m10s
เดคลิเนชัน: +18°55'49"