December 1917 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 1917 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.5
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 6.4"
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: 18h55m15s
விலக்கம்: -24°51'32"

Venus

Excellent
Apparent magnitude: -4.7
நட்சத்திர மண்டலம்: Aquarius
Angular diameter: 29.7"
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: 20h47m25s
விலக்கம்: -20°00'49"

Mars

Excellent
Apparent magnitude: 0.7
நட்சத்திர மண்டலம்: Virgo
Angular diameter: 7.2"
Status: near eastern quadrature

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

Right ascension: 11h29m49s
விலக்கம்: +05°48'36"

Jupiter

Excellent
Apparent magnitude: -2.8
நட்சத்திர மண்டலம்: Gemini
Angular diameter: 48.0"
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: 04h10m10s
விலக்கம்: +20°11'24"

Saturn

Excellent
Apparent magnitude: 0.1
நட்சத்திர மண்டலம்: Leo
Angular diameter: 19.6"
Status: near eastern quadrature

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

Right ascension: 09h07m38s
விலக்கம்: +17°17'40"

Uranus

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

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

Right ascension: 21h33m08s
விலக்கம்: -15°16'57"

Neptune

Fair
Apparent magnitude: 7.8
நட்சத்திர மண்டலம்: Leo
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 08h36m29s
விலக்கம்: +18°25'15"

Moon

Excellent
Apparent magnitude: -12.7
நட்சத்திர மண்டலம்: Capricornus
Angular diameter: 12388.0"
Status: Moon illumination 0.5%

Observation tip: Moon illumination 0.5%; good for observing lunar surface detail

Right ascension: 18h01m04s
விலக்கம்: -23°33'52"