December 2018 Événements célestes

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

Aperçu des événements célestes mensuels

19 événements célestes au total, dont 4 phases lunaires et 1 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 2018 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -0.3
Constellation: Sagittarius
Angular diameter: 6.7"
Status: near greatest eastern 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: 16h00m44s
Déclinaison: -18°16'18"

Venus

Excellent
Magnitude apparente: -4.8
Constellation: Scorpius
Angular diameter: 32.9"
Status: near greatest eastern 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: 14h27m23s
Déclinaison: -11°35'54"

Mars

Excellent
Magnitude apparente: 0.2
Constellation: Pisces
Angular diameter: 8.4"
Status: near western quadrature

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

Ascension droite: 23h19m13s
Déclinaison: -05°10'43"

Jupiter

Excellent
Magnitude apparente: -1.8
Constellation: Sagittarius
Angular diameter: 31.3"
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: 16h25m48s
Déclinaison: -21°01'27"

Saturn

Excellent
Magnitude apparente: 0.6
Constellation: Capricornus
Angular diameter: 15.1"
Status: near western quadrature

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

Ascension droite: 18h40m42s
Déclinaison: -22°35'58"

Uranus

Fair
Magnitude apparente: 5.8
Constellation: Aries
Angular diameter: 3.7"
Status: near western quadrature

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

Ascension droite: 01h47m56s
Déclinaison: +10°32'48"

Neptune

Fair
Magnitude apparente: 7.8
Constellation: Pisces
Angular diameter: 2.3"
Status: near western quadrature

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

Ascension droite: 23h01m50s
Déclinaison: -07°16'08"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Pisces
Angular diameter: 11588.3"
Status: Moon illumination 45.4%

Observation tip: Moon illumination 45.4%; good for observing lunar surface detail

Ascension droite: 23h20m22s
Déclinaison: -08°38'05"