April 2012 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

16 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 2012 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.6
กลุ่มดาว: Pisces
Angular diameter: 8.4"
Status: near greatest eastern elongation

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

Right ascension: 23h57m04s
เดคลิเนชัน: -02°26'24"

Venus

Excellent
Apparent magnitude: -4.6
กลุ่มดาว: Gemini
Angular diameter: 29.6"
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

Right ascension: 04h29m43s
เดคลิเนชัน: +26°10'47"

Mars

Excellent
Apparent magnitude: -0.4
กลุ่มดาว: Virgo
Angular diameter: 11.3"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 10h26m24s
เดคลิเนชัน: +12°41'02"

Jupiter

Excellent
Apparent magnitude: -2.0
กลุ่มดาว: Taurus
Angular diameter: 33.3"
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: 02h57m00s
เดคลิเนชัน: +15°57'07"

Saturn

Excellent
Apparent magnitude: 0.3
กลุ่มดาว: Libra
Angular diameter: 19.1"
Status: near eastern quadrature

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

Right ascension: 13h41m23s
เดคลิเนชัน: -07°32'39"

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: 00h22m03s
เดคลิเนชัน: +01°37'59"

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: 22h18m35s
เดคลิเนชัน: -11°07'16"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aquarius
Angular diameter: 11992.6"
Status: Moon illumination 34.0%

Observation tip: Moon illumination 34.0%; good for observing lunar surface detail

Right ascension: 21h01m15s
เดคลิเนชัน: -11°56'10"