May 1981 Événements célestes

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

Aperçu des événements célestes mensuels

21 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

May 1981 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -0.7
Constellation: Gemini
Angular diameter: 6.2"
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: 04h41m49s
Déclinaison: +24°26'20"

Venus

Excellent
Magnitude apparente: -3.9
Constellation: Gemini
Angular diameter: 9.8"
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: 04h07m36s
Déclinaison: +20°57'46"

Mars

Excellent
Magnitude apparente: 1.3
Constellation: Taurus
Angular diameter: 3.8"
Status: near eastern quadrature

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

Ascension droite: 02h48m54s
Déclinaison: +16°01'09"

Jupiter

Excellent
Magnitude apparente: -2.3
Constellation: Libra
Angular diameter: 41.2"
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: 12h04m53s
Déclinaison: +01°05'22"

Saturn

Excellent
Magnitude apparente: 0.7
Constellation: Libra
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: 12h16m27s
Déclinaison: +01°01'34"

Uranus

Fair
Magnitude apparente: 5.5
Constellation: Scorpius
Angular diameter: 4.0"
Status: near eastern quadrature

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

Ascension droite: 15h44m20s
Déclinaison: -19°33'32"

Neptune

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

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

Ascension droite: 17h35m15s
Déclinaison: -21°57'18"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Libra
Angular diameter: 11531.3"
Status: Moon illumination 86.1%

Observation tip: Moon illumination 86.1%; good for observing lunar surface detail

Ascension droite: 12h45m07s
Déclinaison: +00°08'04"