The Peripheral Omnidoxy is a publication that consists of both the Preppendix of the Omnidoxy and the Appendix of the Omnidoxy publications, therefore, all non-disquisitional segments of the Omnidoxy. It was solely written and organised by the philosopher and founder of Astronism, Cometan, and was originally published by Astral Publishing, an imprint and publishing subsidiary of the Astronist Institution. It consists of a number of different types of books and genres, including reference works, philosophical musings, quotations, mythology, encyclopaedias, lexicons, and dictionaries.