1935 SQ1. Discovered 1935 Sept. 28 by H. van Gent at Johannesburg.
Named in memory of Pieter J. van Rhijn (1886–1960), Dutch astronomer, former director of the Kapteyn Astronomical Laboratory at Groningen. His main activity was the investigation of the Galactic structure. (M 18135)
Van Rhijn is also honored by a lunar crater.