I propose five factors — peer review, open access, enriched content, available datasets and machine-readable metadata — as the Five Stars of Online Journal Articles, a constellation of five independent criteria within a multi-dimensional publishing universe against which online journal articles can be evaluated, to see how well they match up with current visions for enhanced research communications. Achievement along each of these publishing axes can vary, analogous to the different stars within the constellation shining with varying luminosities. I suggest a five-point scale for each, by which a journal article can be evaluated, and provide diagrammatic representations for such evaluations. While the criteria adopted for these scales are somewhat arbitrary, and while the rating of a particular article on each axis may involve elements of subjective judgment, these Five Stars of Online Journal Articles provide a conceptual framework by which to judge the degree to which any article achieves or falls short of the ideal, which should be useful to authors, editors and publishers. I exemplify such evaluations using my own recent publications of relevance to semantic publishing.