January 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 4 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

January 1990 mid-month observing conditions

Mercury

Excellent
Magnitude apparente: 1.7
Constellation: Capricornus
Angular diameter: 9.6"
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: 18h49m43s
Déclinaison: -19°33'09"

Venus

Excellent
Magnitude apparente: -4.3
Constellation: Aquarius
Angular diameter: 62.1"
Status: near superior 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: 20h08m02s
Déclinaison: -14°46'19"

Mars

Excellent
Magnitude apparente: 1.5
Constellation: Sagittarius
Angular diameter: 4.2"
Status: near eastern quadrature

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

Ascension droite: 17h14m29s
Déclinaison: -23°13'00"

Jupiter

Excellent
Magnitude apparente: -2.7
Constellation: Cancer
Angular diameter: 46.6"
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: 06h14m55s
Déclinaison: +23°18'50"

Saturn

Excellent
Magnitude apparente: 0.5
Constellation: Capricornus
Angular diameter: 15.1"
Status: near eastern quadrature

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

Ascension droite: 19h14m39s
Déclinaison: -22°03'13"

Uranus

Fair
Magnitude apparente: 5.8
Constellation: Capricornus
Angular diameter: 3.5"
Status: near eastern quadrature

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

Ascension droite: 18h28m44s
Déclinaison: -23°33'03"

Neptune

Fair
Magnitude apparente: 7.9
Constellation: Capricornus
Angular diameter: 2.2"
Status: near eastern quadrature

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

Ascension droite: 18h54m11s
Déclinaison: -22°00'29"

Moon

Excellent
Magnitude apparente: -12.7
Constellation: Virgo
Angular diameter: 11885.8"
Status: Moon illumination 84.4%

Observation tip: Moon illumination 84.4%; good for observing lunar surface detail

Ascension droite: 10h47m20s
Déclinaison: +05°19'40"