May 2021 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

21 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

May 2021 mid-month observing conditions

Mercury

Excellent
見かけの等級: 0.2
星座: Gemini
Angular diameter: 7.6"
Status: near greatest western elongation

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

赤経: 04h58m31s
赤緯: +25°07'55"

Venus

Excellent
見かけの等級: -3.9
星座: Gemini
Angular diameter: 10.0"
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

赤経: 04h21m40s
赤緯: +21°44'21"

Mars

Excellent
見かけの等級: 1.7
星座: Cancer
Angular diameter: 4.4"
Status: near western quadrature

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

赤経: 06h57m29s
赤緯: +24°11'58"

Jupiter

Excellent
見かけの等級: -2.3
星座: Pisces
Angular diameter: 39.0"
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

赤経: 22h09m57s
赤緯: -12°10'47"

Saturn

Excellent
見かけの等級: 0.6
星座: Aquarius
Angular diameter: 17.1"
Status: near eastern quadrature

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

赤経: 21h04m26s
赤緯: -17°22'02"

Uranus

Fair
見かけの等級: 5.9
星座: Taurus
Angular diameter: 3.4"
Status: near eastern quadrature

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

赤経: 02h36m45s
赤緯: +14°53'41"

Neptune

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

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

赤経: 23h35m03s
赤緯: -03°53'24"

Moon

Excellent
見かけの等級: -12.7
星座: Gemini
Angular diameter: 11537.9"
Status: Moon illumination 9.0%

Observation tip: Moon illumination 9.0%; good for observing lunar surface detail

赤経: 05h56m41s
赤緯: +25°06'58"