September 1988 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

20 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

September 1988 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.2
กลุ่มดาว: Libra
Angular diameter: 6.9"
Status: near greatest western elongation

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

Right ascension: 13h05m51s
เดคลิเนชัน: -09°44'36"

Venus

Excellent
Apparent magnitude: -4.2
กลุ่มดาว: Leo
Angular diameter: 18.8"
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: 08h40m38s
เดคลิเนชัน: +17°07'18"

Mars

Excellent
Apparent magnitude: -2.6
กลุ่มดาว: Aries
Angular diameter: 23.6"
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: 00h40m52s
เดคลิเนชัน: -01°11'29"

Jupiter

Excellent
Apparent magnitude: -2.5
กลุ่มดาว: Gemini
Angular diameter: 42.6"
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: 04h17m06s
เดคลิเนชัน: +20°18'58"

Saturn

Excellent
Apparent magnitude: 0.4
กลุ่มดาว: Sagittarius
Angular diameter: 16.7"
Status: near western quadrature

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

Right ascension: 17h43m14s
เดคลิเนชัน: -22°27'22"

Uranus

Fair
Apparent magnitude: 5.7
กลุ่มดาว: Sagittarius
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 17h47m15s
เดคลิเนชัน: -23°37'34"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Capricornus
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 18h32m06s
เดคลิเนชัน: -22°16'43"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Scorpius
Angular diameter: 11627.1"
Status: Moon illumination 12.8%

Observation tip: Moon illumination 12.8%; good for observing lunar surface detail

Right ascension: 14h01m13s
เดคลิเนชัน: -16°39'15"