0185-1101 0185-1101 S0185-11012018000200355 Belgium Belgium Germany 00 00 2018 00 00 2018 54 2 355 361

1994 106 275 275 1998 337 321 321 1993 271 125 125 1928 16 1 1 2004 1936 83 433 433 2003 2012 546 A61 A61 2014 561 A126 A126 1993 106 80 80 ESA 1997 Gaia Collaboration 2016 595 A1 A1 Gaia Collaboration 2018 616 A1 A1 Gravity Collaboration 2017 602 A94 A94 2007 375 1315 1315 2004 1919 50 161 161 2016 456 3655 3655 2002 383 188 188 2001 369 L22 L22 2001 372 935 935 2003 398 1163 1163 2004 424 727 727 1928 10 8 8 1980 85 858 858 1994 6 2010 18 67 67 2017 597 A68 A68 1931 17 684 684