December 2099 Événements célestes

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

Aperçu des événements célestes mensuels

24 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 2099 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -1.2
Constellation: Sagittarius
Angular diameter: 4.6"
Status: near inferior conjunction

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Ascension droite: 17h20m12s
Déclinaison: -24°07'25"

Venus

Excellent
Magnitude apparente: -4.0
Constellation: Aquarius
Angular diameter: 13.6"
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: 20h08m18s
Déclinaison: -22°12'22"

Mars

Excellent
Magnitude apparente: -0.8
Constellation: Aries
Angular diameter: 12.9"
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: 01h26m14s
Déclinaison: +09°37'22"

Jupiter

Excellent
Magnitude apparente: -1.8
Constellation: Libra
Angular diameter: 34.0"
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: 13h12m14s
Déclinaison: -06°20'04"

Saturn

Excellent
Magnitude apparente: 0.8
Constellation: Libra
Angular diameter: 16.4"
Status: near eastern quadrature

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

Ascension droite: 13h34m01s
Déclinaison: -07°16'27"

Uranus

Fair
Magnitude apparente: 5.8
Constellation: Aries
Angular diameter: 3.6"
Status: near western quadrature

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

Ascension droite: 01h06m35s
Déclinaison: +06°23'06"

Neptune

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

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

Ascension droite: 11h14m52s
Déclinaison: +05°52'45"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Aquarius
Angular diameter: 12027.0"
Status: Moon illumination 10.8%

Observation tip: Moon illumination 10.8%; good for observing lunar surface detail

Ascension droite: 20h18m31s
Déclinaison: -23°34'56"