1. Astronomical Observatory, Odessa National University, Shevchenko Park, UA-65014 Odessa, Ukraine
2. Isaac Newton Institute of Chile, Odessa branch, Shevchenko Park, UA-65014 Odessa, Ukraine
3. Universidad Andres Bello, Fernandez Concha 700, Santiago, Chile
4. GEPI, Observatoire de Paris-Meudon, CNRS, Universite Paris Diderot, F-92125 Meudon Cedex, France
5. Crimean Astrophysical Observatory, Nauchny UA-298409, Crimea, Ukraine
6. European Southern Observatory, Alonso de Cordova 3107, Santiago, Chile
7. Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 12-14, D-69120 Heidelberg, Germany