December 2090 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

24 himmelbegivenheder i alt, inklusive 4 månefaser og 5 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

December 2090 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -0.0
Stjernebillede: Sagittarius
Angular diameter: 7.8"
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: 16h09m27s
Deklination: -18°12'04"

Venus

Excellent
Tilsyneladende magnitude: -4.5
Stjernebillede: Scorpius
Angular diameter: 24.7"
Status: near greatest eastern 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: 14h21m00s
Deklination: -11°08'36"

Mars

Excellent
Tilsyneladende magnitude: 0.6
Stjernebillede: Virgo
Angular diameter: 7.7"
Status: near eastern quadrature

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

Rektascension: 11h16m03s
Deklination: +07°24'18"

Jupiter

Excellent
Tilsyneladende magnitude: -1.8
Stjernebillede: Sagittarius
Angular diameter: 31.6"
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: 17h57m08s
Deklination: -23°12'53"

Saturn

Excellent
Tilsyneladende magnitude: -0.5
Stjernebillede: Gemini
Angular diameter: 20.7"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Saturn’s rings require a telescope to see clearly

Rektascension: 05h24m41s
Deklination: +21°40'34"

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: 22h55m36s
Deklination: -07°40'46"

Neptune

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

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

Rektascension: 09h59m17s
Deklination: +12°42'53"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Libra
Angular diameter: 12579.7"
Status: Moon illumination 40.9%

Observation tip: Moon illumination 40.9%; good for observing lunar surface detail

Rektascension: 12h17m41s
Deklination: -00°10'17"