July 1998 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

23 sky events total, including 5 moon phases and 2 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

July 1998 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Leo
Angular diameter: 7.6"
Status: near greatest western elongation

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

Right ascension: 09h24m59s
เดคลิเนชัน: +14°54'52"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Gemini
Angular diameter: 11.6"
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: 05h35m53s
เดคลิเนชัน: +22°23'00"

Mars

Excellent
Apparent magnitude: 1.6
กลุ่มดาว: Cancer
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 06h25m26s
เดคลิเนชัน: +23°58'42"

Jupiter

Excellent
Apparent magnitude: -2.6
กลุ่มดาว: Pisces
Angular diameter: 44.1"
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: 23h54m56s
เดคลิเนชัน: -02°00'09"

Saturn

Excellent
Apparent magnitude: 0.5
กลุ่มดาว: Taurus
Angular diameter: 17.6"
Status: near eastern quadrature

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

Right ascension: 02h05m39s
เดคลิเนชัน: +10°07'47"

Uranus

Fair
Apparent magnitude: 5.7
กลุ่มดาว: Aquarius
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 20h56m41s
เดคลิเนชัน: -17°58'37"

Neptune

Fair
Apparent magnitude: 7.7
กลุ่มดาว: Aquarius
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 20h12m36s
เดคลิเนชัน: -19°35'19"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aries
Angular diameter: 12563.4"
Status: Moon illumination 68.5%

Observation tip: Moon illumination 68.5%; good for observing lunar surface detail

Right ascension: 00h06m40s
เดคลิเนชัน: -01°59'38"