December 1909 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

23 himmelbegivenheder i alt, inklusive 4 månefaser og 2 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

December 1909 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -0.9
Stjernebillede: Sagittarius
Angular diameter: 4.8"
Status: near greatest western elongation

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Rektascension: 17h55m11s
Deklination: -25°18'26"

Venus

Excellent
Tilsyneladende magnitude: -4.7
Stjernebillede: Aquarius
Angular diameter: 28.8"
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

Rektascension: 20h48m22s
Deklination: -19°59'09"

Mars

Excellent
Tilsyneladende magnitude: -0.4
Stjernebillede: Aries
Angular diameter: 11.1"
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

Rektascension: 00h34m43s
Deklination: +03°45'44"

Jupiter

Excellent
Tilsyneladende magnitude: -1.9
Stjernebillede: Libra
Angular diameter: 34.7"
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

Rektascension: 12h44m01s
Deklination: -03°23'08"

Saturn

Excellent
Tilsyneladende magnitude: 0.5
Stjernebillede: Aries
Angular diameter: 18.7"
Status: near western quadrature

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

Rektascension: 01h04m27s
Deklination: +04°02'03"

Uranus

Fair
Tilsyneladende magnitude: 5.9
Stjernebillede: Capricornus
Angular diameter: 3.4"
Status: near western quadrature

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

Rektascension: 19h24m49s
Deklination: -22°28'22"

Neptune

Fair
Tilsyneladende magnitude: 7.8
Stjernebillede: Cancer
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektascension: 07h20m16s
Deklination: +21°26'47"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Capricornus
Angular diameter: 12064.7"
Status: Moon illumination 5.0%

Observation tip: Moon illumination 5.0%; good for observing lunar surface detail

Rektascension: 19h20m23s
Deklination: -25°37'53"