August 1921 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

24 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

August 1921 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.5
กลุ่มดาว: Leo
Angular diameter: 5.3"
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: 09h02m29s
เดคลิเนชัน: +18°21'13"

Venus

Excellent
Apparent magnitude: -4.0
กลุ่มดาว: Cancer
Angular diameter: 15.9"
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: 06h45m12s
เดคลิเนชัน: +21°27'04"

Mars

Excellent
Apparent magnitude: 1.7
กลุ่มดาว: Leo
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 08h40m33s
เดคลิเนชัน: +19°28'25"

Jupiter

Excellent
Apparent magnitude: -1.7
กลุ่มดาว: Virgo
Angular diameter: 31.3"
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: 11h29m08s
เดคลิเนชัน: +04°31'48"

Saturn

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Virgo
Angular diameter: 16.1"
Status: near western quadrature

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

Right ascension: 11h39m20s
เดคลิเนชัน: +04°28'02"

Uranus

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

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

Right ascension: 22h41m01s
เดคลิเนชัน: -09°12'18"

Neptune

Fair
Apparent magnitude: 8.0
กลุ่มดาว: Leo
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 09h05m09s
เดคลิเนชัน: +16°45'55"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Capricornus
Angular diameter: 11518.0"
Status: Moon illumination 88.3%

Observation tip: Moon illumination 88.3%; good for observing lunar surface detail

Right ascension: 18h49m21s
เดคลิเนชัน: -17°55'15"