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Table 1.

Model-fit parameters for the 86 GHz GMVA observations.

Epoch Flux δF Distance δD PA FWHM ID
(year) (Jy) (Jy) (mas) (mas) (deg) (mas)
2009.35 0.790 0.079 0.003 C0
0.262 0.027 0.066 0.005 −168.18 0.014 d1
0.273 0.028 0.169 0.006 −168.34 0.032 d2
0.043 0.004 0.270 0.005 −172.65 7.3e−8 d3
0.390 0.040 0.339 0.009 −164.98 0.077 d4

2009.77 1.417 0.142 0.019 C0
0.427 0.043 0.176 0.007 −176.05 0.058 d2
0.141 0.016 0.351 0.008 −171.52 0.039 d4

2010.35 1.098 0.110 0.023 C0
0.411 0.042 0.115 0.007 −174.26 0.052 d1
0.392 0.040 0.292 0.019 −173.50 0.172 d3

2011.35 1.790 0.179 0.027 C0
0.447 0.045 0.186 0.006 −172.41 0.050 d2
0.381 0.039 0.385 0.009 −172.09 0.075 d4

2012.38 1.421 0.142 0.066 C0
0.320 0.033 0.200 0.015 −165.73 0.128 d2

2013.74 0.747 0.075 0.018 C0
0.425 0.043 0.148 0.007 171.89 0.052 d1
0.490 0.050 0.304 0.008 175.13 0.072 d3

2015.37 1.001 0.100 0.032 C0
0.332 0.034 0.072 0.007 −157.54 0.050 d1
0.194 0.021 0.196 0.009 −170.31 0.054 d2
0.287 0.030 0.379 0.013 −169.43 0.105 d4

2015.73 0.488 0.019 C0
0.188 0.020 0.116 0.009 175.71 0.059 d1
0.116 0.015 0.303 0.019 −166.19 0.091 d3

2016.39 0.461 0.046 3.0e-8 C0
0.078 0.012 0.190 0.022 −173.84 0.086 d2
0.067 0.012 0.377 0.037 −167.58 0.124 d4
0.020 0.124 0.005 −5.70 2.7e−8 u1

2016.75 0.525 0.053 0.041 C0
0.227 0.024 0.148 0.020 −165.71 0.136 d1

2017.25 0.706 0.071 0.027 C0
0.470 0.048 0.123 0.008 −160.43 0.072 d1
0.078 0.012 0.213 0.015 155.43 0.062 d2
0.287 0.030 0.312 0.010 −165.82 0.078 d3
0.075 0.114 0.010 −19.17 0.040 u1

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