53 Kalypso

53 Kalypso ( /kəˈlɪpsoʊ/) is a large and very dark main belt asteroid. It was discovered by Robert Luther on April 4, 1858 at Düsseldorf. It is named after Calypso, a sea nymph in Greek mythology, a name it shares with Calypso, a moon of Saturn.

Kalypso has been studied by radar.