January 2011 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

January 2011 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.2
กลุ่มดาว: Capricornus
Angular diameter: 6.1"
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: 18h07m55s
เดคลิเนชัน: -22°34'03"

Venus

Excellent
Apparent magnitude: -4.5
กลุ่มดาว: Sagittarius
Angular diameter: 23.1"
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: 16h26m06s
เดคลิเนชัน: -18°16'36"

Mars

Excellent
Apparent magnitude: 1.1
กลุ่มดาว: Aquarius
Angular diameter: 3.9"
Status: near western quadrature

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

Right ascension: 20h06m34s
เดคลิเนชัน: -21°19'22"

Jupiter

Excellent
Apparent magnitude: -2.2
กลุ่มดาว: Pisces
Angular diameter: 37.2"
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: 23h57m01s
เดคลิเนชัน: -01°38'59"

Saturn

Excellent
Apparent magnitude: 0.7
กลุ่มดาว: Libra
Angular diameter: 17.7"
Status: near eastern quadrature

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

Right ascension: 13h06m53s
เดคลิเนชัน: -04°26'07"

Uranus

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

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

Right ascension: 23h51m23s
เดคลิเนชัน: -01°43'29"

Neptune

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

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

Right ascension: 21h58m10s
เดคลิเนชัน: -12°54'27"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Taurus
Angular diameter: 11894.1"
Status: Moon illumination 73.9%

Observation tip: Moon illumination 73.9%; good for observing lunar surface detail

Right ascension: 03h18m17s
เดคลิเนชัน: +21°44'39"