Note on the Prismographic Projection (P. Stooke, unpublished, 1999): The spacing between meridians is equal to their spacing (at the equator) on the triaxial ellipsoid used as a shape model (131 by 73 by 67 km semiaxes). The spacing between parallels is equal to their spacing along each meridian on the triaxial ellipsoid. Different variants, approximating equivalence, equidistance and conformality, would be possible if appropriate scale factors are introduced in the y coordinate equations. In the case illustrated here the y coordinates are divided by the cosine of latitude, which increases spacing towards the poles to give a compromise between equidistance and conformality. The name 'Prismographic' indicates that the surface is projected onto a prism with the same cross-section as the body's equator. Cylindrical projections are a subset of prismographic projections.