Old Faithful
From Memory Alpha, the free Star Trek reference
Old Faithful is a geyser on the North American continent of Earth, so called because of its regular eruptions every 65-92 minutes.
Paul Stubbs compared the unusual neutron star/red giant binary system of the Kavis Alpha sector to Old Faithful because of the regular 196 year interval between expulsions of neutronium by the neutron star. (TNG: "Evolution")
