April 2004 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

24 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

April 2004 mid-month observing conditions

Mercury

Fair
見かけの等級: 5.7
星座: Aries
Angular diameter: 11.4"
Status: near superior conjunction

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

赤経: 01h43m38s
赤緯: +13°12'59"

Venus

Excellent
見かけの等級: -4.6
星座: Gemini
Angular diameter: 28.6"
Status: near superior 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: 04h31m06s
赤緯: +26°06'05"

Mars

Excellent
見かけの等級: 1.5
星座: Gemini
Angular diameter: 4.6"
Status: near western quadrature

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

赤経: 04h57m40s
赤緯: +23°51'50"

Jupiter

Excellent
見かけの等級: -2.3
星座: Virgo
Angular diameter: 42.1"
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: 10h46m30s
赤緯: +09°16'50"

Saturn

Excellent
見かけの等級: 0.1
星座: Cancer
Angular diameter: 17.9"
Status: near western quadrature

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

赤経: 06h33m02s
赤緯: +22°48'11"

Uranus

Fair
見かけの等級: 6.0
星座: Pisces
Angular diameter: 3.4"
Status: near eastern quadrature

Observation tip: A telescope is required; Binoculars or a telescope are recommended

赤経: 22h30m30s
赤緯: -10°09'43"

Neptune

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

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

赤経: 21h10m20s
赤緯: -16°20'56"

Moon

Excellent
見かけの等級: -12.7
星座: Pisces
Angular diameter: 12168.8"
Status: Moon illumination 20.7%

Observation tip: Moon illumination 20.7%; good for observing lunar surface detail

赤経: 22h21m10s
赤緯: -15°34'23"