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發表於 2010-4-20 23:12:24
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今年 5 月 16 日星期日傍晚,香港西面的 20 度低空將出現一次「月掩金星」天文現象。當晚若少雲阻擋,市民可望見光亮的金星貼近新月的右上方,隨著月球在天空中移動,至 7 時 37 分金星被月球圓面的黑色部份遮掩,24 分鐘後 (8 時 1 分) 金星再從新月的右角尖露出來,至 9 時 18 分也完全月落。由於當晚的金星距離月球不足一個月面視直徑,使用雙筒望遠鏡更易觀看金星移向幼窄如弓的新月。
上次黃昏肉眼可見月掩金星發生於 1948 年,下次要久待 至 2023 年,盡量不要錯過今年的月掩金星機會。
On Sunday, 16 May 2010, there shall be an evening skyshow if the weather is favorable. The brightest planet Venus shall be occulted by the Moon crescent in the western sky at about 20 degrees low altitude. Venus is very bright close to the Moon crescent. The planet shall be hidden by the dark side of the crescent at 7:37 pm and reappear at 8:01 pm next to the crescent’s bright rim. This event is naked-eye visible, however an easier watch is using an ordinary binocular which helps to resolve the close separation of Venus from the Moon.
The last similar show was 1984. If this 2010 show is missed, we have to wait until 2023. |
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