December 2018 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

19 合計天文イベント、含む 4 月相と 1 惑星イベント。

毎日の天文現象

すべての時刻は現地時間 (Asia/Shanghai)

Group 日付 日の出/日の入り 月の出/月の入り 月相 天文現象

Planetary outlook

December 2018 mid-month observing conditions

Mercury

Excellent
見かけの等級: -0.3
星座: Sagittarius
Angular diameter: 6.7"
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

赤経: 16h00m44s
赤緯: -18°16'18"

Venus

Excellent
見かけの等級: -4.8
星座: Scorpius
Angular diameter: 32.9"
Status: near greatest eastern elongation

Observation tip: Very bright, easily visible to the naked eye; Venus is the brightest planet and is best seen at dusk or dawn

赤経: 14h27m23s
赤緯: -11°35'54"

Mars

Excellent
見かけの等級: 0.2
星座: Pisces
Angular diameter: 8.4"
Status: near western quadrature

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

赤経: 23h19m13s
赤緯: -05°10'43"

Jupiter

Excellent
見かけの等級: -1.8
星座: Sagittarius
Angular diameter: 31.3"
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

赤経: 16h25m48s
赤緯: -21°01'27"

Saturn

Excellent
見かけの等級: 0.6
星座: Capricornus
Angular diameter: 15.1"
Status: near western quadrature

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

赤経: 18h40m42s
赤緯: -22°35'58"

Uranus

Fair
見かけの等級: 5.8
星座: Aries
Angular diameter: 3.7"
Status: near western quadrature

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

赤経: 01h47m56s
赤緯: +10°32'48"

Neptune

Fair
見かけの等級: 7.8
星座: Pisces
Angular diameter: 2.3"
Status: near western quadrature

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

赤経: 23h01m50s
赤緯: -07°16'08"

Moon

Excellent
見かけの等級: -12.7
星座: Pisces
Angular diameter: 11588.3"
Status: Moon illumination 45.4%

Observation tip: Moon illumination 45.4%; good for observing lunar surface detail

赤経: 23h20m22s
赤緯: -08°38'05"