December 2011 Événements célestes

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

Aperçu des événements célestes mensuels

16 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 2011 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: 0.1
Constellation: Sagittarius
Angular diameter: 8.1"
Status: near greatest eastern elongation

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Ascension droite: 16h09m55s
Déclinaison: -18°10'05"

Venus

Excellent
Magnitude apparente: -3.9
Constellation: Capricornus
Angular diameter: 12.1"
Status: near greatest western elongation

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: 19h40m04s
Déclinaison: -23°13'36"

Mars

Excellent
Magnitude apparente: 0.5
Constellation: Virgo
Angular diameter: 7.8"
Status: near eastern quadrature

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

Ascension droite: 11h08m21s
Déclinaison: +08°14'51"

Jupiter

Excellent
Magnitude apparente: -2.7
Constellation: Aries
Angular diameter: 45.8"
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

Ascension droite: 01h55m42s
Déclinaison: +10°26'14"

Saturn

Excellent
Magnitude apparente: 0.8
Constellation: Libra
Angular diameter: 16.3"
Status: near eastern quadrature

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

Ascension droite: 13h43m43s
Déclinaison: -08°12'31"

Uranus

Fair
Magnitude apparente: 5.9
Constellation: Aries
Angular diameter: 3.5"
Status: near western quadrature

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

Ascension droite: 00h03m33s
Déclinaison: -00°24'53"

Neptune

Fair
Magnitude apparente: 7.8
Constellation: Pisces
Angular diameter: 2.2"
Status: near western quadrature

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

Ascension droite: 22h03m20s
Déclinaison: -12°30'45"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Leo
Angular diameter: 12149.2"
Status: Moon illumination 81.0%

Observation tip: Moon illumination 81.0%; good for observing lunar surface detail

Ascension droite: 09h01m52s
Déclinaison: +12°07'46"