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Table 2

Relative positions of the Mira binary system.

Epoch Δαcosδ Δδ ρ θ Telescope Reference
′′ ′′ ′′ °

1995.9467   0.549   ± 0.002  −0.182   ± 0.002 0.578 108.3 HST Karovska et al. (1997)
2004.1295   0.525   ± 0.003  −0.149   ± 0.003 0.546 105.8 HST Ireland et al. (2007)
2004.1342   0.5281 ± 0.0008  −0.1465 ± 0.0008 0.5480 105.51 HST This paper
2007.7283   0.5093 ± 0.0020  −0.1258 ± 0.0022 0.5246 103.87 HST This paper
2014.1478   0.4721 ± 0.0006  −0.0792 ± 0.0007 0.4787 99.53 JVLA Matthews, priv. comm.
2014.4517   0.4687 ± 0.0006  −0.0750 ± 0.0005 0.4747 99.09 ALMA band 7 This paper
2014.4572   0.4695 ± 0.0003  −0.0752 ± 0.0003 0.4755 99.10 ALMA band 9 This paper
2014.8050 0.46620 ± 0.00011 −0.07119 ± 0.00010 0.47161 98.68 ALMA band 3 This paper
2014.8309 0.46610 ± 0.00007 −0.06980 ± 0.00008 0.47129 98.52 ALMA band 6 This paper

Notes. ρ is the star separation and θ is the position angle. The uncertainties in the offsets are the formal errors in the Gaussian fits.

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