December 1909 Événements célestes

Lieu d'observation:Beijing (39.904°, 116.407°)

Aperçu des événements célestes mensuels

23 événements célestes au total, dont 4 phases lunaires et 2 événements planétaires.

Événements célestes quotidiens

Toutes les heures en heure locale (Asia/Shanghai)

Group Date Lever/Coucher du soleil Lever/Coucher de la lune Phase lunaire Événements célestes

Planetary outlook

December 1909 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -0.9
Constellation: Sagittarius
Angular diameter: 4.8"
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

Ascension droite: 17h55m11s
Déclinaison: -25°18'26"

Venus

Excellent
Magnitude apparente: -4.7
Constellation: Aquarius
Angular diameter: 28.8"
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

Ascension droite: 20h48m22s
Déclinaison: -19°59'09"

Mars

Excellent
Magnitude apparente: -0.4
Constellation: Aries
Angular diameter: 11.1"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Ascension droite: 00h34m43s
Déclinaison: +03°45'44"

Jupiter

Excellent
Magnitude apparente: -1.9
Constellation: Libra
Angular diameter: 34.7"
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

Ascension droite: 12h44m01s
Déclinaison: -03°23'08"

Saturn

Excellent
Magnitude apparente: 0.5
Constellation: Aries
Angular diameter: 18.7"
Status: near western quadrature

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

Ascension droite: 01h04m27s
Déclinaison: +04°02'03"

Uranus

Fair
Magnitude apparente: 5.9
Constellation: Capricornus
Angular diameter: 3.4"
Status: near western quadrature

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

Ascension droite: 19h24m49s
Déclinaison: -22°28'22"

Neptune

Fair
Magnitude apparente: 7.8
Constellation: Cancer
Angular diameter: 2.3"
Status: near eastern quadrature

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

Ascension droite: 07h20m16s
Déclinaison: +21°26'47"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Capricornus
Angular diameter: 12064.7"
Status: Moon illumination 5.0%

Observation tip: Moon illumination 5.0%; good for observing lunar surface detail

Ascension droite: 19h20m23s
Déclinaison: -25°37'53"