April 2007 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

23 sky events total, including 4 moon phases and 0 planetary events.

เหตุการณ์ท้องฟ้า

All times are in local time (Asia/Shanghai)

Group วันที่ Sunrise/Sunset Moonrise/Moonset Moon Phase ปรากฏการณ์ท้องฟ้า

Planetary outlook

April 2007 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.5
กลุ่มดาว: Aries
Angular diameter: 5.5"
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: 00h28m32s
เดคลิเนชัน: +00°31'17"

Venus

Excellent
Apparent magnitude: -4.0
กลุ่มดาว: Gemini
Angular diameter: 14.8"
Status: near greatest western 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: 04h04m10s
เดคลิเนชัน: +22°24'03"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Pisces
Angular diameter: 5.0"
Status: near eastern quadrature

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

Right ascension: 22h35m30s
เดคลิเนชัน: -10°19'54"

Jupiter

Excellent
Apparent magnitude: -2.4
กลุ่มดาว: Sagittarius
Angular diameter: 42.0"
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: 17h15m13s
เดคลิเนชัน: -22°18'15"

Saturn

Excellent
Apparent magnitude: 0.3
กลุ่มดาว: Leo
Angular diameter: 19.0"
Status: near western quadrature

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

Right ascension: 09h24m09s
เดคลิเนชัน: +16°38'02"

Uranus

Fair
Apparent magnitude: 6.0
กลุ่มดาว: Pisces
Angular diameter: 3.4"
Status: near eastern quadrature

Observation tip: A telescope is required; Binoculars or a telescope are recommended

Right ascension: 23h12m50s
เดคลิเนชัน: -05°52'11"

Neptune

Fair
Apparent magnitude: 7.8
กลุ่มดาว: Aquarius
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 21h36m13s
เดคลิเนชัน: -14°32'10"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Pisces
Angular diameter: 12857.5"
Status: Moon illumination 9.1%

Observation tip: Moon illumination 9.1%; good for observing lunar surface detail

Right ascension: 23h21m08s
เดคลิเนชัน: -03°47'39"