July 2012 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

21 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

July 2012 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 1.7
กลุ่มดาว: Leo
Angular diameter: 10.5"
Status: near superior conjunction

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

Right ascension: 08h56m29s
เดคลิเนชัน: +14°07'13"

Venus

Excellent
Apparent magnitude: -4.7
กลุ่มดาว: Gemini
Angular diameter: 35.8"
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: 04h46m56s
เดคลิเนชัน: +17°43'10"

Mars

Excellent
Apparent magnitude: 1.0
กลุ่มดาว: Libra
Angular diameter: 6.2"
Status: near western quadrature

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

Right ascension: 12h23m04s
เดคลิเนชัน: -02°18'56"

Jupiter

Excellent
Apparent magnitude: -2.1
กลุ่มดาว: Gemini
Angular diameter: 34.8"
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: 04h21m48s
เดคลิเนชัน: +20°44'24"

Saturn

Excellent
Apparent magnitude: 0.7
กลุ่มดาว: Libra
Angular diameter: 17.1"
Status: near western quadrature

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

Right ascension: 13h29m08s
เดคลิเนชัน: -06°39'22"

Uranus

Fair
Apparent magnitude: 5.9
กลุ่มดาว: Aries
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 00h32m31s
เดคลิเนชัน: +02°43'01"

Neptune

Fair
Apparent magnitude: 7.7
กลุ่มดาว: Pisces
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 22h19m41s
เดคลิเนชัน: -11°03'48"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Gemini
Angular diameter: 11521.1"
Status: Moon illumination 16.1%

Observation tip: Moon illumination 16.1%; good for observing lunar surface detail

Right ascension: 04h15m19s
เดคลิเนชัน: +21°07'06"