December 2012 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

19 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 2012 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -0.5
Stjernebillede: Sagittarius
Angular diameter: 5.5"
Status: near inferior conjunction

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

Rektascension: 16h14m38s
Deklination: -19°58'46"

Venus

Excellent
Tilsyneladende magnitude: -3.9
Stjernebillede: Scorpius
Angular diameter: 11.3"
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

Rektascension: 15h46m19s
Deklination: -18°31'53"

Mars

Excellent
Tilsyneladende magnitude: 1.2
Stjernebillede: Capricornus
Angular diameter: 4.3"
Status: near western quadrature

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

Rektascension: 19h33m15s
Deklination: -22°53'14"

Jupiter

Excellent
Tilsyneladende magnitude: -2.8
Stjernebillede: Gemini
Angular diameter: 48.1"
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: 04h32m39s
Deklination: +21°08'53"

Saturn

Excellent
Tilsyneladende magnitude: 0.7
Stjernebillede: Scorpius
Angular diameter: 15.9"
Status: near eastern quadrature

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

Rektascension: 14h25m47s
Deklination: -12°01'21"

Uranus

Fair
Tilsyneladende magnitude: 5.9
Stjernebillede: Aries
Angular diameter: 3.6"
Status: near western quadrature

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

Rektascension: 00h18m04s
Deklination: +01°10'31"

Neptune

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

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

Rektascension: 22h11m50s
Deklination: -11°48'08"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Capricornus
Angular diameter: 12884.1"
Status: Moon illumination 4.1%

Observation tip: Moon illumination 4.1%; good for observing lunar surface detail

Rektascension: 19h09m33s
Deklination: -18°23'31"