April 1998 天文現象

観測地点:Beijing (39.904°, 116.407°)

月間天文現象概要

22 合計天文イベント、含む 4 月相と 2 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 1998 mid-month observing conditions

Mercury

Good
見かけの等級: 2.9
星座: Aries
Angular diameter: 11.3"
Status: near greatest eastern elongation

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

赤経: 00h39m44s
赤緯: +04°45'44"

Venus

Excellent
見かけの等級: -4.3
星座: Pisces
Angular diameter: 20.3"
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: 22h43m34s
赤緯: -08°11'53"

Mars

Excellent
見かけの等級: 1.2
星座: Aries
Angular diameter: 3.8"
Status: near western quadrature

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

赤経: 01h57m35s
赤緯: +11°44'27"

Jupiter

Excellent
見かけの等級: -2.1
星座: Pisces
Angular diameter: 34.3"
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: 23h10m59s
赤緯: -06°18'33"

Saturn

Excellent
見かけの等級: 0.6
星座: Aries
Angular diameter: 16.1"
Status: near eastern quadrature

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

赤経: 01h30m28s
赤緯: +07°03'10"

Uranus

Fair
見かけの等級: 5.9
星座: Aquarius
Angular diameter: 3.5"
Status: near eastern quadrature

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

赤経: 20h59m49s
赤緯: -17°42'33"

Neptune

Fair
見かけの等級: nan
星座: Aquarius
Angular diameter: 2.3"
Status: near eastern quadrature

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

赤経: 20h16m56s
赤緯: -19°21'15"

Moon

Excellent
見かけの等級: -12.7
星座: Scorpius
Angular diameter: 11593.0"
Status: Moon illumination 91.5%

Observation tip: Moon illumination 91.5%; good for observing lunar surface detail

赤経: 15h49m49s
赤緯: -14°54'47"