RV changes with time in the spectrum of BAT99 3a. The average RVs for the Balmer and He ii absorption lines are plotted with (black) diamonds and triangles, respectively. The (red) squares are the RVs for the N v λλ4604, 4620 emission lines. The dashed lines are the scatter in RV of the Balmer lines in star 2, as observed in the second Gemini spectrum.