July 2009 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

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

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

July 2009 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -2.1
กลุ่มดาว: Cancer
Angular diameter: 5.0"
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: 07h43m35s
เดคลิเนชัน: +22°53'41"

Venus

Excellent
Apparent magnitude: -4.1
กลุ่มดาว: Gemini
Angular diameter: 16.6"
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

Right ascension: 04h37m39s
เดคลิเนชัน: +19°41'43"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Gemini
Angular diameter: 5.1"
Status: near eastern quadrature

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

Right ascension: 04h00m09s
เดคลิเนชัน: +20°03'41"

Jupiter

Excellent
Apparent magnitude: -2.8
กลุ่มดาว: Aquarius
Angular diameter: 47.3"
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

Right ascension: 21h53m00s
เดคลิเนชัน: -13°54'07"

Saturn

Excellent
Apparent magnitude: 1.0
กลุ่มดาว: Virgo
Angular diameter: 16.7"
Status: near western quadrature

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

Right ascension: 11h17m56s
เดคลิเนชัน: +06°42'54"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Pisces
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 23h48m34s
เดคลิเนชัน: -02°05'13"

Neptune

Fair
Apparent magnitude: 7.7
กลุ่มดาว: Aquarius
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 21h53m18s
เดคลิเนชัน: -13°15'33"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aries
Angular diameter: 12021.3"
Status: Moon illumination 54.5%

Observation tip: Moon illumination 54.5%; good for observing lunar surface detail

Right ascension: 00h57m09s
เดคลิเนชัน: +11°42'30"