April 1991 Gökyüzü Olayları

Observer Location:Beijing (39.904°, 116.407°)

Gezegenlere Genel Bakış

22 sky events total, including 4 moon phases and 1 planetary events.

Gökyüzü Olayları

All times are in local time (Asia/Shanghai)

Group Tarih Sunrise/Sunset Moonrise/Moonset Moon Phase Gökyüzü Olayları

Planetary outlook

April 1991 mid-month observing conditions

Mercury

Fair
Apparent magnitude: 6.5
Takımyıldız: Aries
Angular diameter: 11.6"
Status: near greatest eastern elongation

Observation tip: A telescope is required; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 01h26m56s
Gerilim: +11°18'50"

Venus

Excellent
Apparent magnitude: -4.0
Takımyıldız: Taurus
Angular diameter: 14.3"
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

Right ascension: 03h59m48s
Gerilim: +22°04'38"

Mars

Excellent
Apparent magnitude: 1.2
Takımyıldız: Cancer
Angular diameter: 5.6"
Status: near western quadrature

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

Right ascension: 06h28m25s
Gerilim: +25°06'24"

Jupiter

Excellent
Apparent magnitude: -2.2
Takımyıldız: Leo
Angular diameter: 39.0"
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

Right ascension: 08h25m44s
Gerilim: +20°01'30"

Saturn

Excellent
Apparent magnitude: 0.6
Takımyıldız: Aquarius
Angular diameter: 16.4"
Status: near eastern quadrature

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

Right ascension: 20h33m50s
Gerilim: -19°03'08"

Uranus

Fair
Apparent magnitude: 5.7
Takımyıldız: Capricornus
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 19h00m09s
Gerilim: -23°04'36"

Neptune

Fair
Apparent magnitude: 7.8
Takımyıldız: Capricornus
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 19h12m15s
Gerilim: -21°35'35"

Moon

Excellent
Apparent magnitude: -12.7
Takımyıldız: Aries
Angular diameter: 12574.0"
Status: Moon illumination 0.2%

Observation tip: Moon illumination 0.2%; good for observing lunar surface detail

Right ascension: 01h32m36s
Gerilim: +15°02'37"