July 1987 Événements célestes

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

Aperçu des événements célestes mensuels

23 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

July 1987 mid-month observing conditions

Mercury

Good
Magnitude apparente: 2.1
Constellation: Cancer
Angular diameter: 10.1"
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: 06h31m13s
Déclinaison: +18°51'53"

Venus

Excellent
Magnitude apparente: -3.9
Constellation: Cancer
Angular diameter: 9.9"
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: 06h48m55s
Déclinaison: +23°12'09"

Mars

Excellent
Magnitude apparente: 1.8
Constellation: Leo
Angular diameter: 3.6"
Status: near western quadrature

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

Ascension droite: 08h31m49s
Déclinaison: +20°04'16"

Jupiter

Excellent
Magnitude apparente: -2.4
Constellation: Aries
Angular diameter: 39.8"
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: 01h44m45s
Déclinaison: +09°26'35"

Saturn

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

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

Ascension droite: 16h57m43s
Déclinaison: -21°07'18"

Uranus

Fair
Magnitude apparente: 5.6
Constellation: Sagittarius
Angular diameter: 3.8"
Status: near western quadrature

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

Ascension droite: 17h32m12s
Déclinaison: -23°26'44"

Neptune

Fair
Magnitude apparente: 7.8
Constellation: Capricornus
Angular diameter: 2.3"
Status: near western quadrature

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

Ascension droite: 18h26m46s
Déclinaison: -22°15'03"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Pisces
Angular diameter: 12637.2"
Status: Moon illumination 79.5%

Observation tip: Moon illumination 79.5%; good for observing lunar surface detail

Ascension droite: 23h10m56s
Déclinaison: -07°04'39"