April 1990 Événements célestes

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

Aperçu des événements célestes mensuels

24 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

April 1990 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: 0.3
Constellation: Taurus
Angular diameter: 8.0"
Status: near superior conjunction

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Ascension droite: 02h42m56s
Déclinaison: +18°47'03"

Venus

Excellent
Magnitude apparente: -4.3
Constellation: Pisces
Angular diameter: 20.7"
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: 22h42m30s
Déclinaison: -08°13'33"

Mars

Excellent
Magnitude apparente: 0.9
Constellation: Aquarius
Angular diameter: 5.7"
Status: near eastern quadrature

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

Ascension droite: 21h53m14s
Déclinaison: -14°17'08"

Jupiter

Excellent
Magnitude apparente: -2.1
Constellation: Cancer
Angular diameter: 36.2"
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: 06h19m31s
Déclinaison: +23°27'53"

Saturn

Excellent
Magnitude apparente: 0.5
Constellation: Capricornus
Angular diameter: 16.7"
Status: near eastern quadrature

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

Ascension droite: 19h47m40s
Déclinaison: -20°56'49"

Uranus

Fair
Magnitude apparente: 5.7
Constellation: Capricornus
Angular diameter: 3.7"
Status: near eastern quadrature

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

Ascension droite: 18h41m49s
Déclinaison: -23°23'52"

Neptune

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

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

Ascension droite: 19h02m53s
Déclinaison: -21°47'11"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Sagittarius
Angular diameter: 11518.3"
Status: Moon illumination 80.0%

Observation tip: Moon illumination 80.0%; good for observing lunar surface detail

Ascension droite: 17h05m46s
Déclinaison: -27°01'40"