December 2057 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

25 himmelbegivenheder i alt, inklusive 4 månefaser og 4 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

December 2057 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: 0.1
Stjernebillede: Sagittarius
Angular diameter: 8.1"
Status: near greatest eastern elongation

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

Rektascension: 16h14m06s
Deklination: -18°20'09"

Venus

Excellent
Tilsyneladende magnitude: -3.9
Stjernebillede: Sagittarius
Angular diameter: 9.8"
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: 17h18m45s
Deklination: -23°04'33"

Mars

Excellent
Tilsyneladende magnitude: 1.2
Stjernebillede: Capricornus
Angular diameter: 3.9"
Status: near western quadrature

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

Rektascension: 18h14m34s
Deklination: -24°14'24"

Jupiter

Excellent
Tilsyneladende magnitude: -2.3
Stjernebillede: Pisces
Angular diameter: 38.7"
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: 22h49m52s
Deklination: -08°43'52"

Saturn

Excellent
Tilsyneladende magnitude: 0.2
Stjernebillede: Aries
Angular diameter: 19.2"
Status: near western quadrature

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

Rektascension: 01h52m56s
Deklination: +08°47'35"

Uranus

Fair
Tilsyneladende magnitude: 5.6
Stjernebillede: Libra
Angular diameter: 3.7"
Status: near eastern quadrature

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

Rektascension: 13h44m10s
Deklination: -10°10'02"

Neptune

Fair
Tilsyneladende magnitude: 7.7
Stjernebillede: Gemini
Angular diameter: 2.4"
Status: near western quadrature

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

Rektascension: 04h44m30s
Deklination: +20°42'37"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Leo
Angular diameter: 11489.4"
Status: Moon illumination 86.6%

Observation tip: Moon illumination 86.6%; good for observing lunar surface detail

Rektascension: 08h38m46s
Deklination: +22°07'29"