pickering tried to figure out an orbit for themis. he thought that themis had an inclination of 39.1° to the ecliptic, with 0.23 eccentricity (0.23) and a semi-major axis distance of 1,457,000 km. this meant that themis had an orbit like the moons titan and hyperion. pickering believed that it took themis 20.85 days to orbit saturn, in a prograde motion.