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Table 1

Observing log.

OB Time Base Projected baseline
Length PA
[m] [degrees]

M2-9_1 2007-04-11 U2 - U3 40.2 107.3
M2-9_2 2007-06-28 U2 - U3 47.3 126.0
M2-9_3 2007-08-28 U2 - U3 39.7 44.0
M2-9_4 2008-03-28 U3 - U4 45.1 39.0

Notes. Calibrators: HD 116870 K5III 2.44 ± 0.12 mas, HD 163917 G9III 2.75 ± 0.11 mas, HD 167618 M3.5III 11.33 ± 0.1 mas, HD 175775 G9III 3.26 ± 0.23 mas, HD 152820 K5III 2.57 ± 0.34 mas.

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