March 1990 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

24 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

March 1990 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.5
กลุ่มดาว: Pisces
Angular diameter: 4.9"
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: 23h27m04s
เดคลิเนชัน: -05°31'23"

Venus

Excellent
Apparent magnitude: -4.7
กลุ่มดาว: Aquarius
Angular diameter: 29.7"
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: 20h41m00s
เดคลิเนชัน: -14°55'01"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Aquarius
Angular diameter: 5.1"
Status: near eastern quadrature

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

Right ascension: 20h19m54s
เดคลิเนชัน: -20°32'05"

Jupiter

Excellent
Apparent magnitude: -2.3
กลุ่มดาว: Cancer
Angular diameter: 39.8"
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: 06h05m53s
เดคลิเนชัน: +23°28'54"

Saturn

Excellent
Apparent magnitude: 0.6
กลุ่มดาว: Capricornus
Angular diameter: 15.9"
Status: near eastern quadrature

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

Right ascension: 19h40m24s
เดคลิเนชัน: -21°13'01"

Uranus

Fair
Apparent magnitude: 5.7
กลุ่มดาว: Capricornus
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 18h40m09s
เดคลิเนชัน: -23°24'45"

Neptune

Fair
Apparent magnitude: 7.9
กลุ่มดาว: Capricornus
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 19h01m38s
เดคลิเนชัน: -21°49'38"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Libra
Angular diameter: 11507.9"
Status: Moon illumination 88.4%

Observation tip: Moon illumination 88.4%; good for observing lunar surface detail

Right ascension: 13h58m59s
เดคลิเนชัน: -17°31'16"