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Table 1.

Relative astrometric position, ΔX and ΔY, of the secondary component of V923 Sco determined from the VLTI observations.

HJD φ ΔX [mas] ΔY [mas] a [mas] b [mas] PA [deg] F2/F1 Bands Stations Combiner
2 456 388.877 0.758 −4.251 +1.850 0.2633 0.1250 113.5 0.837(11) H + K A1-G1-J3 AMBER
2 456 507.582 0.165 +2.635 −1.339 0.1936 0.1250 116.9 0.829(4) H + K A1-G1-J3 AMBER
2 456 540.584 0.112 +3.206 −1.548 0.1132 0.0125 115.8 0.9(3) H A1-G1-K0-J3 PIONIER
2 456 727.837 0.487 −3.187 +1.114 0.4082 0.1250 109.3 0.789(7) H + K A1-G1-J3 AMBER
2 456 728.852 0.516 −2.849 +0.894 0.1947 0.1250 107.4 0.899(20) H + K A1-G1-J3 AMBER
2 456 740.864 0.861 −3.550 +1.587 0.2311 0.1250 114.1 0.840(11) H + K A1-G1-J3 AMBER
2 456 817.776 0.069 +2.618 −1.193 0.1905 0.1250 114.5 0.811(14) H + K A1-G1-J3 AMBER
2 457 932.627 0.089 +2.853 −1.306 0.0300 0.0240 24.6 0.820(10) K A0-G1-J2-J3 GRAVITY
2 457 936.587 0.203 +2.572 −1.327 0.0128 0.0125 124.1 0.814(8) K A0-G1-J2-K0 GRAVITY

Notes. The orbital phases (ϕ) correspond to the ephemeris HJD 2 456 779.83651 + 34.838646 × E defined by the primary minimum from MOST photometry in 2014 and the orbital period from spectroscopy (F11). The table also gives the flux ratios F2/F1 of the components (the error of the last digit is given in parenthesis) and the corresponding photometric band(s). The flux ratio is the average for the photometric bands used. The uncertainty of the position is expressed by the error ellipse with major and minor axes a, b and the position angle measured from north through east.

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