August 1987 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 1987 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.7
กลุ่มดาว: Leo
Angular diameter: 5.1"
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: 09h16m08s
เดคลิเนชัน: +17°33'17"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Leo
Angular diameter: 9.7"
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: 09h28m47s
เดคลิเนชัน: +16°10'00"

Mars

Excellent
Apparent magnitude: 1.7
กลุ่มดาว: Leo
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: 09h50m47s
เดคลิเนชัน: +14°15'29"

Jupiter

Excellent
Apparent magnitude: -2.6
กลุ่มดาว: Aries
Angular diameter: 44.0"
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: 01h52m30s
เดคลิเนชัน: +10°01'49"

Saturn

Excellent
Apparent magnitude: 0.3
กลุ่มดาว: Sagittarius
Angular diameter: 17.3"
Status: near western quadrature

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

Right ascension: 16h53m38s
เดคลิเนชัน: -21°06'57"

Uranus

Fair
Apparent magnitude: 5.6
กลุ่มดาว: Sagittarius
Angular diameter: 3.8"
Status: near western quadrature

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

Right ascension: 17h28m48s
เดคลิเนชัน: -23°24'28"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Capricornus
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 18h23m51s
เดคลิเนชัน: -22°17'42"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Taurus
Angular diameter: 12091.2"
Status: Moon illumination 63.9%

Observation tip: Moon illumination 63.9%; good for observing lunar surface detail

Right ascension: 02h09m37s
เดคลิเนชัน: +16°02'24"