May 2017 Événements célestes

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

Aperçu des événements célestes mensuels

20 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

May 2017 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: 0.6
Constellation: Aries
Angular diameter: 8.7"
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: 01h52m37s
Déclinaison: +08°03'17"

Venus

Excellent
Magnitude apparente: -4.6
Constellation: Aries
Angular diameter: 30.6"
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: 00h38m39s
Déclinaison: +03°23'20"

Mars

Excellent
Magnitude apparente: 1.6
Constellation: Gemini
Angular diameter: 3.8"
Status: near western quadrature

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

Ascension droite: 04h59m23s
Déclinaison: +23°28'12"

Jupiter

Excellent
Magnitude apparente: -2.4
Constellation: Libra
Angular diameter: 42.5"
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: 12h54m34s
Déclinaison: -04°12'18"

Saturn

Excellent
Magnitude apparente: 0.2
Constellation: Sagittarius
Angular diameter: 18.1"
Status: near eastern quadrature

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

Ascension droite: 17h45m29s
Déclinaison: -22°01'18"

Uranus

Fair
Magnitude apparente: 5.9
Constellation: Aries
Angular diameter: 3.4"
Status: near eastern quadrature

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

Ascension droite: 01h37m53s
Déclinaison: +09°34'46"

Neptune

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

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

Ascension droite: 23h02m19s
Déclinaison: -07°06'48"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Capricornus
Angular diameter: 11509.1"
Status: Moon illumination 85.5%

Observation tip: Moon illumination 85.5%; good for observing lunar surface detail

Ascension droite: 18h38m29s
Déclinaison: -19°17'38"