May 1909 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

May 1909 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.1
กลุ่มดาว: Gemini
Angular diameter: 7.1"
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: 04h52m14s
เดคลิเนชัน: +24°58'38"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Taurus
Angular diameter: 9.7"
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: 03h42m29s
เดคลิเนชัน: +19°23'48"

Mars

Excellent
Apparent magnitude: -0.0
กลุ่มดาว: Aquarius
Angular diameter: 9.3"
Status: near eastern quadrature

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

Right ascension: 21h44m21s
เดคลิเนชัน: -15°43'10"

Jupiter

Excellent
Apparent magnitude: -2.1
กลุ่มดาว: Virgo
Angular diameter: 38.4"
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: 10h28m28s
เดคลิเนชัน: +10°55'48"

Saturn

Excellent
Apparent magnitude: 0.8
กลุ่มดาว: Aries
Angular diameter: 16.3"
Status: near eastern quadrature

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

Right ascension: 01h10m08s
เดคลิเนชัน: +04°59'35"

Uranus

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

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

Right ascension: 19h30m49s
เดคลิเนชัน: -22°16'14"

Neptune

Fair
Apparent magnitude: 7.9
กลุ่มดาว: Cancer
Angular diameter: 2.2"
Status: near western quadrature

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

Right ascension: 07h04m40s
เดคลิเนชัน: +21°53'51"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Pisces
Angular diameter: 12691.1"
Status: Moon illumination 26.8%

Observation tip: Moon illumination 26.8%; good for observing lunar surface detail

Right ascension: 23h36m39s
เดคลิเนชัน: -08°12'28"