April 1902 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

18 sky events total, including 4 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

April 1902 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.8
กลุ่มดาว: Aries
Angular diameter: 5.3"
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: 00h38m50s
เดคลิเนชัน: +01°53'36"

Venus

Excellent
Apparent magnitude: -4.6
กลุ่มดาว: Pisces
Angular diameter: 27.7"
Status: near greatest eastern 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: 22h38m31s
เดคลิเนชัน: -07°25'25"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Aries
Angular diameter: 3.9"
Status: near eastern quadrature

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

Right ascension: 01h16m59s
เดคลิเนชัน: +07°32'25"

Jupiter

Excellent
Apparent magnitude: -2.2
กลุ่มดาว: Aquarius
Angular diameter: 36.9"
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: 21h03m22s
เดคลิเนชัน: -17°19'31"

Saturn

Excellent
Apparent magnitude: 0.6
กลุ่มดาว: Capricornus
Angular diameter: 16.5"
Status: near eastern quadrature

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

Right ascension: 19h57m40s
เดคลิเนชัน: -20°38'44"

Uranus

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

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

Right ascension: 17h21m23s
เดคลิเนชัน: -23°13'23"

Neptune

Fair
Apparent magnitude: 7.9
กลุ่มดาว: Gemini
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 05h55m46s
เดคลิเนชัน: +22°19'09"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Cancer
Angular diameter: 12451.7"
Status: Moon illumination 47.6%

Observation tip: Moon illumination 47.6%; good for observing lunar surface detail

Right ascension: 07h28m16s
เดคลิเนชัน: +16°41'39"