Perikrone

Cassini perikrones (periapses at Saturn), sometimes including emissions between the gyroharmonic bands above fuh.

The original plan in the primary mission to look for the existence of an internal liquid layer called for four flybys to measure the Love number k₂: two equatorial passes -- one when Titan was at perikrone and one at apokrone, and two inclined passes – also at perikrone and apokrone.

In order to obtain the value of k₂ with high accuracy, four flybys of the Cassini spacecraft will be devoted to measuring Titan's gravity field near both apokrone and perikrone (Castillo et al., 2002).

We report 5 kHz narrowband Z mode emissions observed by the Cassini Radio and Plasma Waves Science (RPWS) instrument during high latitude perikrone passes.