April 2002 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

22 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

April 2002 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.6
กลุ่มดาว: Taurus
Angular diameter: 5.3"
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: 02h03m40s
เดคลิเนชัน: +12°58'49"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Taurus
Angular diameter: 10.8"
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: 02h57m33s
เดคลิเนชัน: +16°55'10"

Mars

Excellent
Apparent magnitude: 1.5
กลุ่มดาว: Taurus
Angular diameter: 4.2"
Status: near western quadrature

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

Right ascension: 03h54m15s
เดคลิเนชัน: +21°01'25"

Jupiter

Excellent
Apparent magnitude: -2.1
กลุ่มดาว: Cancer
Angular diameter: 36.5"
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: 06h37m36s
เดคลิเนชัน: +23°20'59"

Saturn

Excellent
Apparent magnitude: 0.1
กลุ่มดาว: Gemini
Angular diameter: 17.1"
Status: near western quadrature

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

Right ascension: 04h41m43s
เดคลิเนชัน: +20°48'16"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Pisces
Angular diameter: 3.4"
Status: near eastern quadrature

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

Right ascension: 22h01m15s
เดคลิเนชัน: -12°52'42"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Aquarius
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 20h52m44s
เดคลิเนชัน: -17°27'02"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Taurus
Angular diameter: 11663.2"
Status: Moon illumination 4.5%

Observation tip: Moon illumination 4.5%; good for observing lunar surface detail

Right ascension: 03h10m06s
เดคลิเนชัน: +15°06'06"