September 2004 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

23 sky events total, including 4 moon phases and 3 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

September 2004 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.8
กลุ่มดาว: Virgo
Angular diameter: 6.2"
Status: near inferior conjunction

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 10h33m27s
เดคลิเนชัน: +10°28'40"

Venus

Excellent
Apparent magnitude: -4.2
กลุ่มดาว: Leo
Angular diameter: 18.1"
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: 08h43m46s
เดคลิเนชัน: +17°05'49"

Mars

Excellent
Apparent magnitude: 1.6
กลุ่มดาว: Virgo
Angular diameter: 3.5"
Status: near western quadrature

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

Right ascension: 11h34m36s
เดคลิเนชัน: +03°47'40"

Jupiter

Excellent
Apparent magnitude: -1.7
กลุ่มดาว: Virgo
Angular diameter: 30.6"
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: 11h53m40s
เดคลิเนชัน: +01°51'39"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Cancer
Angular diameter: 17.4"
Status: near eastern quadrature

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

Right ascension: 07h46m39s
เดคลิเนชัน: +21°00'02"

Uranus

Fair
Apparent magnitude: 5.8
กลุ่มดาว: Pisces
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 22h25m08s
เดคลิเนชัน: -10°45'04"

Neptune

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

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

Right ascension: 21h02m00s
เดคลิเนชัน: -16°58'58"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Virgo
Angular diameter: 12088.3"
Status: Moon illumination 0.2%

Observation tip: Moon illumination 0.2%; good for observing lunar surface detail

Right ascension: 11h54m53s
เดคลิเนชัน: +03°48'41"