February 1931 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

February 1931 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.2
กลุ่มดาว: Aquarius
Angular diameter: 5.4"
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: 20h30m42s
เดคลิเนชัน: -20°18'29"

Venus

Excellent
Apparent magnitude: -4.4
กลุ่มดาว: Capricornus
Angular diameter: 21.6"
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: 18h38m22s
เดคลิเนชัน: -20°24'32"

Mars

Excellent
Apparent magnitude: -1.0
กลุ่มดาว: Leo
Angular diameter: 13.2"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 08h14m34s
เดคลิเนชัน: +24°17'02"

Jupiter

Excellent
Apparent magnitude: -2.5
กลุ่มดาว: Cancer
Angular diameter: 44.2"
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: 06h48m29s
เดคลิเนชัน: +23°13'18"

Saturn

Excellent
Apparent magnitude: 0.6
กลุ่มดาว: Capricornus
Angular diameter: 15.4"
Status: near eastern quadrature

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

Right ascension: 19h21m22s
เดคลิเนชัน: -21°49'27"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Aries
Angular diameter: 3.4"
Status: near western quadrature

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

Right ascension: 00h47m45s
เดคลิเนชัน: +04°25'55"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Virgo
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 10h27m09s
เดคลิเนชัน: +10°28'57"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aquarius
Angular diameter: 11582.9"
Status: Moon illumination 6.0%

Observation tip: Moon illumination 6.0%; good for observing lunar surface detail

Right ascension: 20h02m00s
เดคลิเนชัน: -25°35'43"