BK Lyn is a nova-like variable observed with HST as part of a multi-HST cycle CV snapshot survey (B. Gaensicke, PI) which was only partially completed due to the failure of STIS. With an orbital period of 108 minutes, BK Lyn is the only bona fide nova-like variable lying below the CV period gap. Using the method of Knigge (2006, MNRAS, 373, 484), its distance lies within the range 116 to 291 pc. Optically thick accretion disk models yield distances in excess of 1.5 kpc. We have found good synthetic spectral fits with white dwarf model photospheres having T$_{eff}$ between 38,000$K$ and 34,000$K$, log $g$ between 7 and 8.6 and model-derived distances of 137 and 307 pc, respectively. Both distances are in reasonable agreement with the Knigge distance range. The white dwarf may be the hottest CV primary below the period gap. The evolutionary significance and implications of BK Lyn
are discussed.
This work is supported by NSF grant AST-0807892 and NASA/HST grant GO-9724.02A, both to Villanova University.