April 1985 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 1985 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 1.9
กลุ่มดาว: Aries
Angular diameter: 10.8"
Status: near greatest eastern elongation

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

Right ascension: 00h25m45s
เดคลิเนชัน: +02°35'31"

Venus

Excellent
Apparent magnitude: -4.3
กลุ่มดาว: Aries
Angular diameter: 55.4"
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: 00h20m17s
เดคลิเนชัน: +08°26'03"

Mars

Excellent
Apparent magnitude: 1.5
กลุ่มดาว: Taurus
Angular diameter: 4.0"
Status: near western quadrature

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

Right ascension: 03h18m00s
เดคลิเนชัน: +18°40'34"

Jupiter

Excellent
Apparent magnitude: -2.1
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: 21h02m55s
เดคลิเนชัน: -17°19'47"

Saturn

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Scorpius
Angular diameter: 18.3"
Status: near eastern quadrature

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

Right ascension: 15h40m53s
เดคลิเนชัน: -17°11'28"

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: 17h06m46s
เดคลิเนชัน: -22°53'54"

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: 18h15m30s
เดคลิเนชัน: -22°14'46"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Pisces
Angular diameter: 11682.9"
Status: Moon illumination 23.2%

Observation tip: Moon illumination 23.2%; good for observing lunar surface detail

Right ascension: 22h06m58s
เดคลิเนชัน: -17°07'23"