Black curve is the DCDFT (date compensated discrete Fourier transform) normalized spectra of radial velocities given by Johnson et al. (2010). The red and blue curves are the spectrum of the Keck’s and Lick’s observations, respectively. In green curve we represent the spectra of the residuals after elimination of the period ~660 days by one-body fit. We note the periods given by the best-fit of Johnson et al. (2010).