potentially hazardous object

asteroid or comet with an orbit such that it has the potential to make close approaches to the Earth

en-GB/pəˈtɛnʃəlɪ ˈhæzədəs ˈɒbd͡ʒɪkt/
en-US/pəˈtɛnt͡ʃəli ˈhæzɚdəs ɑbˈd͡ʒɪktv/

カテゴリ：

near-Earth objectexternal risk