December 2008 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

24 himmelbegivenheder i alt, inklusive 4 månefaser og 1 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

December 2008 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -0.8
Stjernebillede: Capricornus
Angular diameter: 4.9"
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: 18h17m51s
Deklination: -25°29'39"

Venus

Excellent
Tilsyneladende magnitude: -4.2
Stjernebillede: Aquarius
Angular diameter: 18.3"
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

Rektascension: 20h44m37s
Deklination: -20°23'20"

Mars

Excellent
Tilsyneladende magnitude: 1.2
Stjernebillede: Sagittarius
Angular diameter: 3.8"
Status: near eastern quadrature

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

Rektascension: 17h19m56s
Deklination: -23°40'09"

Jupiter

Excellent
Tilsyneladende magnitude: -2.0
Stjernebillede: Capricornus
Angular diameter: 33.2"
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

Rektascension: 19h48m32s
Deklination: -21°29'46"

Saturn

Excellent
Tilsyneladende magnitude: 0.9
Stjernebillede: Virgo
Angular diameter: 17.9"
Status: near eastern quadrature

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

Rektascension: 11h31m55s
Deklination: +05°10'42"

Uranus

Fair
Tilsyneladende magnitude: 5.9
Stjernebillede: Pisces
Angular diameter: 3.5"
Status: near western quadrature

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

Rektascension: 23h20m15s
Deklination: -05°06'26"

Neptune

Fair
Tilsyneladende magnitude: 7.8
Stjernebillede: Aquarius
Angular diameter: 2.2"
Status: near western quadrature

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

Rektascension: 21h37m50s
Deklination: -14°31'02"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Cancer
Angular diameter: 12894.2"
Status: Moon illumination 92.1%

Observation tip: Moon illumination 92.1%; good for observing lunar surface detail

Rektascension: 07h53m14s
Deklination: +22°10'23"