December 1981 Événements célestes

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

Aperçu des événements célestes mensuels

22 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 1981 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -1.1
Constellation: Sagittarius
Angular diameter: 4.7"
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: 17h39m34s
Déclinaison: -24°52'43"

Venus

Excellent
Magnitude apparente: -4.9
Constellation: Aquarius
Angular diameter: 39.8"
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: 20h26m10s
Déclinaison: -20°51'29"

Mars

Excellent
Magnitude apparente: 1.0
Constellation: Libra
Angular diameter: 6.4"
Status: near eastern quadrature

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

Ascension droite: 12h01m36s
Déclinaison: +02°07'14"

Jupiter

Excellent
Magnitude apparente: -1.8
Constellation: Scorpius
Angular diameter: 32.7"
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: 14h06m02s
Déclinaison: -11°33'28"

Saturn

Excellent
Magnitude apparente: 0.8
Constellation: Libra
Angular diameter: 16.5"
Status: near eastern quadrature

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

Ascension droite: 13h18m43s
Déclinaison: -05°45'52"

Uranus

Fair
Magnitude apparente: 5.7
Constellation: Scorpius
Angular diameter: 3.6"
Status: near eastern quadrature

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

Ascension droite: 15h58m41s
Déclinaison: -20°20'40"

Neptune

Fair
Magnitude apparente: 8.0
Constellation: Sagittarius
Angular diameter: 2.2"
Status: near western quadrature

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

Ascension droite: 17h36m18s
Déclinaison: -22°04'20"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Leo
Angular diameter: 12545.2"
Status: Moon illumination 82.2%

Observation tip: Moon illumination 82.2%; good for observing lunar surface detail

Ascension droite: 09h04m01s
Déclinaison: +18°39'22"