August 2021 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

27 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 2021 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.7
กลุ่มดาว: Virgo
Angular diameter: 5.1"
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: 10h31m39s
เดคลิเนชัน: +10°40'28"

Venus

Excellent
Apparent magnitude: -4.0
กลุ่มดาว: Virgo
Angular diameter: 13.6"
Status: near greatest western elongation

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: 11h56m04s
เดคลิเนชัน: +01°15'55"

Mars

Excellent
Apparent magnitude: 1.8
กลุ่มดาว: Virgo
Angular diameter: 3.6"
Status: near western quadrature

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

Right ascension: 10h48m20s
เดคลิเนชัน: +08°41'22"

Jupiter

Excellent
Apparent magnitude: -2.9
กลุ่มดาว: Pisces
Angular diameter: 49.1"
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: 22h01m54s
เดคลิเนชัน: -13°18'34"

Saturn

Excellent
Apparent magnitude: 0.3
กลุ่มดาว: Aquarius
Angular diameter: 18.6"
Status: near western quadrature

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

Right ascension: 20h47m37s
เดคลิเนชัน: -18°42'23"

Uranus

Fair
Apparent magnitude: 5.8
กลุ่มดาว: Taurus
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 02h49m47s
เดคลิเนชัน: +15°52'25"

Neptune

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

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

Right ascension: 23h34m33s
เดคลิเนชัน: -04°00'46"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Scorpius
Angular diameter: 12547.5"
Status: Moon illumination 42.8%

Observation tip: Moon illumination 42.8%; good for observing lunar surface detail

Right ascension: 14h48m43s
เดคลิเนชัน: -14°06'31"