January 2021 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

23 合計天文イベント、含む 4 月相と 3 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 2021 mid-month observing conditions

Mercury

Excellent
見かけの等級: -0.9
星座: Aquarius
Angular diameter: 5.7"
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: 20h53m41s
赤緯: -19°10'28"

Venus

Excellent
見かけの等級: -3.9
星座: Capricornus
Angular diameter: 10.4"
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: 18h34m37s
赤緯: -23°08'04"

Mars

Excellent
見かけの等級: 0.1
星座: Taurus
Angular diameter: 9.1"
Status: near western quadrature

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

赤経: 02h04m46s
赤緯: +13°49'35"

Jupiter

Excellent
見かけの等級: -2.0
星座: Aquarius
Angular diameter: 32.6"
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

赤経: 20h34m09s
赤緯: -19°15'08"

Saturn

Excellent
見かけの等級: 0.6
星座: Aquarius
Angular diameter: 15.2"
Status: near western quadrature

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

赤経: 20h22m36s
赤緯: -19°49'07"

Uranus

Fair
見かけの等級: 5.8
星座: Taurus
Angular diameter: 3.6"
Status: near western quadrature

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

赤経: 02h18m09s
赤緯: +13°20'20"

Neptune

Fair
見かけの等級: 7.8
星座: Pisces
Angular diameter: 2.2"
Status: near western quadrature

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

赤経: 23h20m26s
赤緯: -05°25'40"

Moon

Excellent
見かけの等級: -12.7
星座: Aquarius
Angular diameter: 12177.3"
Status: Moon illumination 4.0%

Observation tip: Moon illumination 4.0%; good for observing lunar surface detail

赤経: 21h26m21s
赤緯: -19°42'53"