August 2017 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

21 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

August 2017 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 1.5
กลุ่มดาว: Virgo
Angular diameter: 10.1"
Status: near superior conjunction

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 10h45m10s
เดคลิเนชัน: +03°20'53"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Cancer
Angular diameter: 13.5"
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: 07h12m12s
เดคลิเนชัน: +21°33'36"

Mars

Excellent
Apparent magnitude: 1.7
กลุ่มดาว: Leo
Angular diameter: 3.5"
Status: near eastern quadrature

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

Right ascension: 09h16m42s
เดคลิเนชัน: +17°01'04"

Jupiter

Excellent
Apparent magnitude: -1.8
กลุ่มดาว: Libra
Angular diameter: 33.2"
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: 13h12m07s
เดคลิเนชัน: -06°24'30"

Saturn

Excellent
Apparent magnitude: 0.3
กลุ่มดาว: Sagittarius
Angular diameter: 17.4"
Status: near western quadrature

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

Right ascension: 17h22m20s
เดคลิเนชัน: -21°56'22"

Uranus

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

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

Right ascension: 01h46m39s
เดคลิเนชัน: +10°22'41"

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: 23h00m19s
เดคลิเนชัน: -07°22'45"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Taurus
Angular diameter: 12524.3"
Status: Moon illumination 50.7%

Observation tip: Moon illumination 50.7%; good for observing lunar surface detail

Right ascension: 03h22m39s
เดคลิเนชัน: +13°04'38"