near-Earth comet
Noun
Meaning
near-Earth comet (plural near-Earth comets)
(astronomy) a comet having a period of revolution shorter than 200 years and a perihelion distance smaller than 1.3 au
Noun
near-Earth comet (plural near-Earth comets)
(astronomy) a comet having a period of revolution shorter than 200 years and a perihelion distance smaller than 1.3 au