December 2008 天象

观测地点:Beijing (39.904°, 116.407°)

月度天象概览

24 天文事件合计,包括 4 月相和 1 行星事件。

每日天象

所有时间均为本地时间 (Asia/Shanghai)

Group 日期 日出/日落 月出/月落 月相 天象

Planetary outlook

December 2008 mid-month observing conditions

Mercury

Excellent
视星等: -0.8
星座: 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

赤经: 18h17m51s
赤纬: -25°29'39"

Venus

Excellent
视星等: -4.2
星座: 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

赤经: 20h44m37s
赤纬: -20°23'20"

Mars

Excellent
视星等: 1.2
星座: 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

赤经: 17h19m56s
赤纬: -23°40'09"

Jupiter

Excellent
视星等: -2.0
星座: 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

赤经: 19h48m32s
赤纬: -21°29'46"

Saturn

Excellent
视星等: 0.9
星座: 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

赤经: 11h31m55s
赤纬: +05°10'42"

Uranus

Fair
视星等: 5.9
星座: Pisces
Angular diameter: 3.5"
Status: near western quadrature

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

赤经: 23h20m15s
赤纬: -05°06'26"

Neptune

Fair
视星等: 7.8
星座: Aquarius
Angular diameter: 2.2"
Status: near western quadrature

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

赤经: 21h37m50s
赤纬: -14°31'02"

Moon

Excellent
视星等: -12.7
星座: Cancer
Angular diameter: 12894.2"
Status: Moon illumination 92.1%

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

赤经: 07h53m14s
赤纬: +22°10'23"