Hess diagram showing the location of V07979 depending on the assumed distance (red squares). The stars used in constructing this Hess diagram are obtained from the revised HIPPARCOS catalog (van Leeuwen 2007; Perryman 1997) Compiled by Dr. E. Mamajek (http://www.pas.rochester.edu/~emamajek/). The error bars for the V07979 points along the horizontal axis reflect the uncertainty of the reddening correction (see Sect. 2.2); the error bars along the vertical axis due to uncertainty in the extinction correction are negligibly small as compared to the axis scale and cannot be seen. The blue circles denote the positions of several well-known UV Ceti stars from Dal & Evren (2010).