December 2009 வான் நிகழ்வுகள்

Observer Location:Beijing (39.904°, 116.407°)

கோள்களின் கண்ணோட்டம்

20 sky events total, including 4 moon phases and 1 planetary events.

வான நிகழ்வுகள்

All times are in local time (Asia/Shanghai)

Group தேதி Sunrise/Sunset Moonrise/Moonset Moon Phase வான் நிகழ்வுகள்

Planetary outlook

December 2009 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 6.2"
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: 18h56m48s
விலக்கம்: -24°54'37"

Venus

Excellent
Apparent magnitude: -3.9
நட்சத்திர மண்டலம்: Sagittarius
Angular diameter: 9.9"
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: 17h01m15s
விலக்கம்: -22°30'47"

Mars

Excellent
Apparent magnitude: -0.4
நட்சத்திர மண்டலம்: Leo
Angular diameter: 11.1"
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: 09h31m39s
விலக்கம்: +17°51'25"

Jupiter

Excellent
Apparent magnitude: -2.2
நட்சத்திர மண்டலம்: Aquarius
Angular diameter: 36.3"
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: 21h43m13s
விலக்கம்: -14°42'07"

Saturn

Excellent
Apparent magnitude: 0.9
நட்சத்திர மண்டலம்: Libra
Angular diameter: 17.3"
Status: near eastern quadrature

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

Right ascension: 12h17m41s
விலக்கம்: +00°29'28"

Uranus

Fair
Apparent magnitude: 5.9
நட்சத்திர மண்டலம்: Pisces
Angular diameter: 3.5"
Status: near western quadrature

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

Right ascension: 23h34m40s
விலக்கம்: -03°33'43"

Neptune

Fair
Apparent magnitude: 7.8
நட்சத்திர மண்டலம்: 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: 21h46m22s
விலக்கம்: -13°52'05"

Moon

Excellent
Apparent magnitude: -12.7
நட்சத்திர மண்டலம்: Sagittarius
Angular diameter: 11782.9"
Status: Moon illumination 2.3%

Observation tip: Moon illumination 2.3%; good for observing lunar surface detail

Right ascension: 16h13m55s
விலக்கம்: -24°58'19"