April 2015 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

22 sky events total, including 4 moon phases and 2 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

April 2015 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.8
กลุ่มดาว: Aries
Angular diameter: 5.2"
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

Right ascension: 01h52m04s
เดคลิเนชัน: +11°28'38"

Venus

Excellent
Apparent magnitude: -4.1
กลุ่มดาว: Gemini
Angular diameter: 15.0"
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

Right ascension: 04h06m18s
เดคลิเนชัน: +22°33'14"

Mars

Excellent
Apparent magnitude: 1.4
กลุ่มดาว: Taurus
Angular diameter: 3.9"
Status: near western quadrature

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

Right ascension: 02h32m23s
เดคลิเนชัน: +15°00'20"

Jupiter

Excellent
Apparent magnitude: -2.2
กลุ่มดาว: Leo
Angular diameter: 39.8"
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: 09h01m35s
เดคลิเนชัน: +17°54'57"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Sagittarius
Angular diameter: 18.1"
Status: near eastern quadrature

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

Right ascension: 16h10m17s
เดคลิเนชัน: -18°50'23"

Uranus

Fair
Apparent magnitude: 6.0
กลุ่มดาว: Aries
Angular diameter: 3.4"
Status: near eastern quadrature

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

Right ascension: 01h03m23s
เดคลิเนชัน: +06°04'44"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Pisces
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 22h43m15s
เดคลิเนชัน: -08°54'46"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Pisces
Angular diameter: 12765.8"
Status: Moon illumination 19.6%

Observation tip: Moon illumination 19.6%; good for observing lunar surface detail

Right ascension: 22h12m29s
เดคลิเนชัน: -07°37'45"