December 2002 ปรากฏการณ์ท้องฟ้า

Observer Location:Beijing (39.904°, 116.407°)

ภาพรวมดาวเคราะห์

26 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

December 2002 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
กลุ่มดาว: Capricornus
Angular diameter: 5.4"
Status: near greatest western elongation

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 18h41m02s
เดคลิเนชัน: -25°23'44"

Venus

Excellent
Apparent magnitude: -4.8
กลุ่มดาว: Scorpius
Angular diameter: 35.4"
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: 14h32m01s
เดคลิเนชัน: -11°59'16"

Mars

Excellent
Apparent magnitude: 1.6
กลุ่มดาว: Scorpius
Angular diameter: 4.3"
Status: near eastern quadrature

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

Right ascension: 14h26m00s
เดคลิเนชัน: -13°36'31"

Jupiter

Excellent
Apparent magnitude: -2.4
กลุ่มดาว: Leo
Angular diameter: 42.2"
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: 09h22m21s
เดคลิเนชัน: +16°08'02"

Saturn

Excellent
Apparent magnitude: -0.5
กลุ่มดาว: Gemini
Angular diameter: 20.6"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Saturn’s rings require a telescope to see clearly

Right ascension: 05h41m58s
เดคลิเนชัน: +22°03'27"

Uranus

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

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

Right ascension: 21h52m28s
เดคลิเนชัน: -13°40'15"

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: 20h45m48s
เดคลิเนชัน: -17°57'27"

Moon

Excellent
Apparent magnitude: -12.7
กลุ่มดาว: Aries
Angular diameter: 11500.6"
Status: Moon illumination 79.7%

Observation tip: Moon illumination 79.7%; good for observing lunar surface detail

Right ascension: 01h53m12s
เดคลิเนชัน: +08°01'19"