This graph is the unique rank-3 strongly regular graph with parameters $(63,30,13,15)$. It is the first subconstituent of the $\mathrm{NO}_8^+(2)$ graph.
| Number of vertices: | $63$ |
| Diameter: | $2$ |
| Intersection array: | $\{30,16;1,15\}$ |
| Spectrum: | $30^1 3^{35} (-5)^{27}$ |
| Automorphism group: | $\mathrm{PS_p}(6,2)$ |
| Distance-transitive: | Yes |
| Primitive |