January 1981 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

20 合計天文イベント、含む 4 月相と 0 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

January 1981 mid-month observing conditions

Mercury

Excellent
見かけの等級: -1.0
星座: Aquarius
Angular diameter: 5.0"
Status: near greatest western 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: 20h27m06s
赤緯: -21°16'18"

Venus

Excellent
見かけの等級: -3.9
星座: Capricornus
Angular diameter: 10.7"
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

赤経: 18h20m13s
赤緯: -23°05'41"

Mars

Excellent
見かけの等級: 1.2
星座: Aquarius
Angular diameter: 4.1"
Status: near western quadrature

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

赤経: 20h58m33s
赤緯: -18°18'13"

Jupiter

Excellent
見かけの等級: -2.1
星座: Libra
Angular diameter: 38.5"
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: 12h39m46s
赤緯: -02°47'41"

Saturn

Excellent
見かけの等級: 0.8
星座: Libra
Angular diameter: 18.0"
Status: near eastern quadrature

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

赤経: 12h39m43s
赤緯: -01°38'41"

Uranus

Fair
見かけの等級: 5.6
星座: Scorpius
Angular diameter: 3.6"
Status: near eastern quadrature

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

赤経: 15h47m32s
赤緯: -19°43'41"

Neptune

Fair
見かけの等級: 8.0
星座: Sagittarius
Angular diameter: 2.2"
Status: near eastern quadrature

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

赤経: 17h32m08s
赤緯: -21°58'58"

Moon

Excellent
見かけの等級: -12.7
星座: Taurus
Angular diameter: 12585.1"
Status: Moon illumination 67.8%

Observation tip: Moon illumination 67.8%; good for observing lunar surface detail

赤経: 02h58m38s
赤緯: +11°28'44"