January 1987 天象

观测地点:Beijing (39.904°, 116.407°)

月度天象概览

21 天文事件合计,包括 4 月相和 2 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

January 1987 mid-month observing conditions

Mercury

Excellent
视星等: -1.4
星座: Capricornus
Angular diameter: 4.7"
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: 19h52m31s
赤纬: -23°00'11"

Venus

Excellent
视星等: -4.5
星座: Sagittarius
Angular diameter: 25.1"
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

赤经: 16h25m01s
赤纬: -17°59'27"

Mars

Excellent
视星等: 0.7
星座: Aries
Angular diameter: 6.4"
Status: near western quadrature

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

赤经: 00h16m55s
赤纬: +01°38'17"

Jupiter

Excellent
视星等: -2.2
星座: Pisces
Angular diameter: 36.2"
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: 23h24m46s
赤纬: -05°04'00"

Saturn

Excellent
视星等: 0.5
星座: Sagittarius
Angular diameter: 15.4"
Status: near eastern quadrature

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

赤经: 17h03m37s
赤纬: -21°18'56"

Uranus

Fair
视星等: 5.7
星座: Sagittarius
Angular diameter: 3.5"
Status: near eastern quadrature

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

赤经: 17h35m34s
赤纬: -23°26'23"

Neptune

Fair
视星等: 7.9
星座: Capricornus
Angular diameter: 2.2"
Status: near eastern quadrature

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

赤经: 18h26m50s
赤纬: -22°17'18"

Moon

Excellent
视星等: -12.7
星座: Cancer
Angular diameter: 11478.7"
Status: Moon illumination 99.8%

Observation tip: Moon illumination 99.8%; good for observing lunar surface detail

赤经: 07h43m37s
赤纬: +26°19'29"