April 2013 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

19 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 2013 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.0
กลุ่มดาว: Aries
Angular diameter: 6.2"
Status: near inferior conjunction

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

Right ascension: 00h08m57s
เดคลิเนชัน: -01°51'38"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Aries
Angular diameter: 9.7"
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: 01h51m31s
เดคลิเนชัน: +10°27'26"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Aries
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: 01h36m34s
เดคลิเนชัน: +09°35'32"

Jupiter

Excellent
Apparent magnitude: -2.0
กลุ่มดาว: Gemini
Angular diameter: 34.6"
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: 04h52m09s
เดคลิเนชัน: +22°09'44"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Scorpius
Angular diameter: 18.8"
Status: near eastern quadrature

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

Right ascension: 14h30m45s
เดคลิเนชัน: -12°01'17"

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: 00h35m46s
เดคลิเนชัน: +03°07'38"

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: 22h26m51s
เดคลิเนชัน: -10°23'48"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Gemini
Angular diameter: 11504.5"
Status: Moon illumination 19.0%

Observation tip: Moon illumination 19.0%; good for observing lunar surface detail

Right ascension: 05h03m39s
เดคลิเนชัน: +20°09'59"