September 2012 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

20 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

September 2012 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.4
กลุ่มดาว: Virgo
Angular diameter: 4.8"
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: 11h49m08s
เดคลิเนชัน: +02°38'00"

Venus

Excellent
Apparent magnitude: -4.2
กลุ่มดาว: Leo
Angular diameter: 17.7"
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: 08h45m27s
เดคลิเนชัน: +17°04'03"

Mars

Excellent
Apparent magnitude: 1.2
กลุ่มดาว: Scorpius
Angular diameter: 5.0"
Status: near western quadrature

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

Right ascension: 14h48m05s
เดคลิเนชัน: -16°53'19"

Jupiter

Excellent
Apparent magnitude: -2.4
กลุ่มดาว: Gemini
Angular diameter: 41.0"
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: 04h58m30s
เดคลิเนชัน: +21°52'20"

Saturn

Excellent
Apparent magnitude: 0.8
กลุ่มดาว: Libra
Angular diameter: 15.7"
Status: near western quadrature

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

Right ascension: 13h46m00s
เดคลิเนชัน: -08°30'33"

Uranus

Fair
Apparent magnitude: 5.8
กลุ่มดาว: Aries
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 00h27m20s
เดคลิเนชัน: +02°08'09"

Neptune

Fair
Apparent magnitude: 7.7
กลุ่มดาว: Pisces
Angular diameter: 2.4"
Status: near western quadrature

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

Right ascension: 22h13m44s
เดคลิเนชัน: -11°38'18"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Virgo
Angular diameter: 12381.4"
Status: Moon illumination 1.7%

Observation tip: Moon illumination 1.7%; good for observing lunar surface detail

Right ascension: 10h32m21s
เดคลิเนชัน: +03°49'48"