September 2017 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

September 2017 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: -0.6
Constellation: Virgo
Angular diameter: 6.7"
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: 10h28m01s
Déclinaison: +10°36'33"

Venus

Excellent
Magnitude apparente: -3.9
Constellation: Leo
Angular diameter: 11.8"
Status: near inferior 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: 09h45m39s
Déclinaison: +14°15'34"

Mars

Excellent
Magnitude apparente: 1.8
Constellation: Virgo
Angular diameter: 3.6"
Status: near eastern quadrature

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

Ascension droite: 10h33m14s
Déclinaison: +10°21'52"

Jupiter

Excellent
Magnitude apparente: -1.7
Constellation: Libra
Angular diameter: 31.4"
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: 13h33m02s
Déclinaison: -08°34'04"

Saturn

Excellent
Magnitude apparente: 0.4
Constellation: Sagittarius
Angular diameter: 16.6"
Status: near western quadrature

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

Ascension droite: 17h23m23s
Déclinaison: -22°03'04"

Uranus

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

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

Ascension droite: 01h44m13s
Déclinaison: +10°08'22"

Neptune

Fair
Magnitude apparente: 7.7
Constellation: Pisces
Angular diameter: 2.4"
Status: near western quadrature

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

Ascension droite: 22h57m13s
Déclinaison: -07°42'19"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Cancer
Angular diameter: 12564.6"
Status: Moon illumination 30.7%

Observation tip: Moon illumination 30.7%; good for observing lunar surface detail

Ascension droite: 07h04m31s
Déclinaison: +19°18'27"