4660 Nereus (/ˈnɪəriəs/ NEER-ee-əs; Greek: Νηρέας) is a small (about 0.33 kilometres (0.21 mi)) asteroid. It was discovered by Eleanor F. Helin on February 28 1982 approximately 1 month after a near pass by the Earth. It is named after Nereus a Titan in Greek mythology.Nereus is potentially a very important asteroid. It is an Apollo and Mars-crosser with an orbit that frequently comes very close to Earth and because of this it is exceptionally accessible to spacecraft.
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