1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz, Russia, 369167
2. Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse d. 65, St. Petersburg, Russia, 196140
3. Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, 4000 Liège, Belgium
4. Acton Sky Portal (Private Observatory), Acton, MA 01720, USA
5. Physics and Engineering Physics Department, University of Saskatchewan, Saskatoon, SK, S7N 5E2, Canada
6. Taurus Hill Observatory, Warkauden Kassiopeia ry., Härkämäentie 88, FI-79480 Kangaslampi, Finland
7. School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
8. Observatory Saint Martin, code k27, Amathay Vésigneux, France
9. Private Observatory, 1155, Hartford St, Elgin, OR 97827, USA
10. Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, F-05150 Moydans, France
11. Green Island Observatory, Code B34, Gecitkale, Famagusta, North Cyprus
12. Institute of Solar-Terrestrial Physics (ISTP), Russian Academy of Sciences, Siberian Branch, Irkutsk, Russia
13. Perseus Observatory, Athens 11810, Greece
14. Trottier Observatory, Physics Department, SFU, Burnaby, BC, Canada
15. Anunaki Observatory, Astro Henares Association, Rivas Vaciamadrid, Madrid, Spain
16. Institute of Astronomy, Kharkov V.N. Karazin National University, Kharkov, Ukraine
17. International Center for Astronomical, Medical and Ecological Research NAS of Ukraine, Kyiv, Ukraine