[1] USTL, UPMC, CNRS, UMR 8028,Observ Paris,Inst Mecan Celeste & Calcul, F-75014 Paris, France
[2] Armagh Observ, Armagh BT61 9DG, North Ireland
[3] Observ Univ Lille, Lille, France
[4] Indian Inst Astrophys, Bangalore 560034, Karnataka, India
[5] Terskol Observ, Kabardino Balkaria, Russia
[6] IAC, Tenerife, Spain
[7] Inst Astron, Bucharest, Romania
[8] Observ S Zani, Lumezzane, Italy
[9] Odessa Natl Univ, Astron Observ, Odessa, Ukraine
[10] Grp Astron Silos, Zaragoza, Spain
[11] Inst Politecn Tomar, Tomar, Portugal
[12] Ural State Univ, Ekaterinburg, Russia
[13] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia
[14] Pulkovo Observ, St Petersburg, Russia
[15] Observ Dax, Dax, France
[16] Observ Bordeaux, Floirac, France
[17] Observ Paris, Meudon, France
[18] GAC, Catania, Italy
[19] Czech Astron Soc, Prague, Czech Republic
[20] Nyrola Observ, Jyvaskyla, Finland
[21] Observ Royal Belgique, B-1180 Brussels, Belgium
[22] Jinan Univ, Guangzhou, Guangdong, Peoples R China
[23] Univ Monterrey, Monterrey, Mexico
[24] Fessenkov Astrophys Inst, Alma Ata, Kazakhstan
[25] Observ & Planetarium Praha, Prague, Czech Republic
[26] Kiev Natl Univ, Kiev, Ukraine
[27] Inst Teorerisk Astrofys, Oslo, Norway
[28] Yunnan Observ, Kunming, Peoples R China
[29] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 117234, Russia
[30] IAP, Paris, France
[31] Forum Sci, Lille, France
[32] Flemish Assoc Amateur Astronomers, Mortsel, Belgium
[33] Indian Inst Astrophys, VBO, Kavalur, India
[34] Grp Estudis Astron, Barcelona, Spain