April 1984 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

23 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 1984 mid-month observing conditions

Mercury

Good
Apparent magnitude: 2.8
กลุ่มดาว: Taurus
Angular diameter: 10.6"
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: 02h11m33s
เดคลิเนชัน: +16°17'18"

Venus

Excellent
Apparent magnitude: -3.9
กลุ่มดาว: Aries
Angular diameter: 10.2"
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: 00h34m47s
เดคลิเนชัน: +02°06'25"

Mars

Excellent
Apparent magnitude: -1.2
กลุ่มดาว: Scorpius
Angular diameter: 14.7"
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: 15h42m57s
เดคลิเนชัน: -18°46'08"

Jupiter

Excellent
Apparent magnitude: -2.3
กลุ่มดาว: Capricornus
Angular diameter: 39.9"
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: 18h54m46s
เดคลิเนชัน: -22°38'24"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Scorpius
Angular diameter: 18.7"
Status: near eastern quadrature

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

Right ascension: 14h51m01s
เดคลิเนชัน: -13°40'56"

Uranus

Fair
Apparent magnitude: 5.5
กลุ่มดาว: Sagittarius
Angular diameter: 3.8"
Status: near eastern quadrature

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

Right ascension: 16h47m19s
เดคลิเนชัน: -22°20'57"

Neptune

Fair
Apparent magnitude: 7.9
กลุ่มดาว: Capricornus
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 18h05m58s
เดคลิเนชัน: -22°14'02"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Libra
Angular diameter: 12886.4"
Status: Moon illumination 98.9%

Observation tip: Moon illumination 98.9%; good for observing lunar surface detail

Right ascension: 12h58m13s
เดคลิเนชัน: -01°45'06"