Discovered by B. Smith Date of Discovery 1981 Distance from Saturn 294,660 km Radius 15.0 × 8.0 × 8.0 km Mass ??? Orbital Eccentricity 0.00000 Orbital Inclination 1.86° Orbital Period 1.8878 days Rotational Period ??? Density (gm/cm3) ???
Calypso wins the award for smallest natural satellite in the solar system. This puny pickle-shaped moon shares its orbit with Tethys, trailing it by 60°, the trailing Lagrange point. Objects that share an orbit at these points are called Trojans. Tethys's other Trojan is Telesto, leading it by 60°.
Sources: NASA.gov space.com