I correct O-C of V508 Oph of Mr.Ondrej Pejcha. minI OPHV508 2451739.439 0.000 Geo Mr.Pejcha n=11 (calculated by Nagai) V508 Oph JD(hel)=2451739.443 E=19307 O-C=-0.0016 Perhaps, it is Primary minimum.