taevakeha, mis (a) tiirleb ümber tähe, (b) on piisavalt massiivne, et olla hüdrostaatilises tasakaalus ümmarguse kujuga ja (c) on puhastanud oma naabruse väiksematest kehadest
a celestial body that (a) is in orbit around a star, (b) has sufficient mass for its self-gravity to assume nearly round shape, and (c) has cleared the neighbourhood around its orbit
