December 1989 வான் நிகழ்வுகள்

Observer Location:Beijing (39.904°, 116.407°)

கோள்களின் கண்ணோட்டம்

30 sky events total, including 4 moon phases and 3 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 1989 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.6
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 5.7"
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: 18h48m10s
விலக்கம்: -25°14'32"

Venus

Excellent
Apparent magnitude: -4.9
நட்சத்திர மண்டலம்: Aquarius
Angular diameter: 41.4"
Status: near superior 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: 20h21m11s
விலக்கம்: -21°03'06"

Mars

Excellent
Apparent magnitude: 1.6
நட்சத்திர மண்டலம்: Scorpius
Angular diameter: 3.9"
Status: near eastern quadrature

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

Right ascension: 15h42m10s
விலக்கம்: -19°31'07"

Jupiter

Excellent
Apparent magnitude: -2.7
நட்சத்திர மண்டலம்: Cancer
Angular diameter: 47.1"
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: 06h32m35s
விலக்கம்: +23°04'22"

Saturn

Excellent
Apparent magnitude: 0.6
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 15.2"
Status: near western quadrature

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

Right ascension: 18h59m02s
விலக்கம்: -22°25'52"

Uranus

Fair
Apparent magnitude: 5.8
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 3.5"
Status: near western quadrature

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

Right ascension: 18h20m40s
விலக்கம்: -23°37'31"

Neptune

Fair
Apparent magnitude: 7.9
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 2.2"
Status: near western quadrature

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

Right ascension: 18h49m12s
விலக்கம்: -22°06'21"

Moon

Excellent
Apparent magnitude: -12.7
நட்சத்திர மண்டலம்: Cancer
Angular diameter: 12445.7"
Status: Moon illumination 92.9%

Observation tip: Moon illumination 92.9%; good for observing lunar surface detail

Right ascension: 07h44m30s
விலக்கம்: +23°22'47"