satellite watching

activity involving the observation and tracking of artificial satellites

en-GB/ˈsætəlaɪt ˈwɒt͡ʃɪŋ/
en-US/ˈsædəˌlaɪt ˈwɑt͡ʃɪŋ/

カテゴリ：

citizen sciencephotographyspotting hobbyobservational astronomy