Present graphs or tables of magnitudes, lightcurves, whatever's appropriate for your project. Discuss what data you rejected, if any. Compare and contrast your results with related previous work. Be sure to label each column with a short name and the units of the tabulated quantities, and in the report text where the table is first referenced identify the contents of each column more fully. As for tables, be clear on what you're trying to show the reader with the figure.
Numbers are cheap, and each equation deserves one for easy reference.
Properly described equations, figures, tables. Demonstration of an understanding of the subject material. Turned in on time Innovation, initiative, understanding of the astronomical relevance, interpretation of results.