August 1990 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

25 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 1990 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.5
กลุ่มดาว: Virgo
Angular diameter: 7.9"
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: 11h15m57s
เดคลิเนชัน: +02°12'27"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Leo
Angular diameter: 10.6"
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: 08h14m35s
เดคลิเนชัน: +20°15'40"

Mars

Excellent
Apparent magnitude: -0.2
กลุ่มดาว: Taurus
Angular diameter: 9.9"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 03h16m46s
เดคลิเนชัน: +16°10'27"

Jupiter

Excellent
Apparent magnitude: -1.8
กลุ่มดาว: Leo
Angular diameter: 32.0"
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: 08h06m01s
เดคลิเนชัน: +20°34'31"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Capricornus
Angular diameter: 18.2"
Status: near western quadrature

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

Right ascension: 19h26m04s
เดคลิเนชัน: -21°56'21"

Uranus

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

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

Right ascension: 18h26m07s
เดคลิเนชัน: -23°38'04"

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: 18h52m42s
เดคลิเนชัน: -22°01'27"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Gemini
Angular diameter: 12605.0"
Status: Moon illumination 34.9%

Observation tip: Moon illumination 34.9%; good for observing lunar surface detail

Right ascension: 04h29m09s
เดคลิเนชัน: +26°18'08"