Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
The Kei/Yuri factor was a scientific measurement that could be determined by sensors in a planet survey.
An anomalous plane of frozen methane on the planet Theta VIII had a Kei/Yuri factor of 12-3. (TNG episode: "The Royale")
The name indicates this might have to do with the properties of keimium and yurium in the atmosphere, mentioned in the same scan.