December 2017 Gökyüzü Olayları

Observer Location:Beijing (39.904°, 116.407°)

Gezegenlere Genel Bakış

22 sky events total, including 4 moon phases and 2 planetary events.

Gökyüzü Olayları

All times are in local time (Asia/Shanghai)

Group Tarih Sunrise/Sunset Moonrise/Moonset Moon Phase Gökyüzü Olayları

Planetary outlook

December 2017 mid-month observing conditions

Mercury

Fair
Apparent magnitude: 4.4
Takımyıldız: Sagittarius
Angular diameter: 9.8"
Status: near greatest eastern elongation

Observation tip: Binoculars are recommended; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 17h11m19s
Gerilim: -20°42'55"

Venus

Excellent
Apparent magnitude: -3.9
Takımyıldız: 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: 17h04m08s
Gerilim: -22°36'43"

Mars

Excellent
Apparent magnitude: 1.6
Takımyıldız: Scorpius
Angular diameter: 4.5"
Status: near eastern quadrature

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

Right ascension: 14h06m34s
Gerilim: -11°45'21"

Jupiter

Excellent
Apparent magnitude: -1.7
Takımyıldız: Scorpius
Angular diameter: 32.0"
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: 14h46m52s
Gerilim: -15°00'49"

Saturn

Excellent
Apparent magnitude: 0.5
Takımyıldız: Sagittarius
Angular diameter: 15.1"
Status: near western quadrature

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

Right ascension: 17h57m20s
Gerilim: -22°31'08"

Uranus

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

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

Right ascension: 01h32m27s
Gerilim: +09°02'00"

Neptune

Fair
Apparent magnitude: 7.8
Takımyıldız: 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: 22h53m33s
Gerilim: -08°03'26"

Moon

Excellent
Apparent magnitude: -12.7
Takımyıldız: Scorpius
Angular diameter: 11592.6"
Status: Moon illumination 9.7%

Observation tip: Moon illumination 9.7%; good for observing lunar surface detail

Right ascension: 15h05m27s
Gerilim: -12°07'14"