December 1990 Eventos celestes

Ubicación del observador:Beijing (39.904°, 116.407°)

Resumen de eventos celestes mensuales

27 eventos celestes en total, incluidos 4 fases lunares y 3 eventos planetarios.

Eventos celestes diarios

Todas las horas en hora local (Asia/Shanghai)

Group Fecha Amanecer/Atardecer Salida/Puesta de la Luna Fase lunar Eventos celestes

Planetary outlook

December 1990 mid-month observing conditions

Mercury

Excellent
Magnitud aparente: 0.3
Constelación: Capricornus
Angular diameter: 8.4"
Status: near superior conjunction

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

Ascensión recta: 18h43m45s
Declinación: -23°42'55"

Venus

Excellent
Magnitud aparente: -3.9
Constelación: Capricornus
Angular diameter: 10.0"
Status: near greatest western elongation

Observation tip: Very bright, easily visible to the naked eye; Venus is the brightest planet and is best seen at dusk or dawn

Ascensión recta: 18h14m50s
Declinación: -24°09'55"

Mars

Excellent
Magnitud aparente: -1.6
Constelación: Taurus
Angular diameter: 16.2"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Ascensión recta: 03h48m41s
Declinación: +22°08'04"

Jupiter

Excellent
Magnitud aparente: -2.4
Constelación: Leo
Angular diameter: 42.9"
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

Ascensión recta: 09h03m33s
Declinación: +17°26'38"

Saturn

Excellent
Magnitud aparente: 0.6
Constelación: Capricornus
Angular diameter: 15.4"
Status: near western quadrature

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

Ascensión recta: 19h42m35s
Declinación: -21°28'29"

Uranus

Fair
Magnitud aparente: 5.8
Constelación: Capricornus
Angular diameter: 3.5"
Status: near western quadrature

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

Ascensión recta: 18h38m03s
Declinación: -23°28'17"

Neptune

Fair
Magnitud aparente: 7.9
Constelación: Capricornus
Angular diameter: 2.2"
Status: near western quadrature

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

Ascensión recta: 18h58m15s
Declinación: -21°58'03"

Moon

Excellent
Magnitud aparente: -12.7
Constelación: Scorpius
Angular diameter: 11456.1"
Status: Moon illumination 4.3%

Observation tip: Moon illumination 4.3%; good for observing lunar surface detail

Ascensión recta: 15h43m28s
Declinación: -24°18'56"