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Table E.1.

Best-fit orbit parameters.

Parameter Value Fit MCMC Unit
error error
fSP 1.10 0.19 0.21
fRS 1 Fixed Fixed
M 4.261 0.012 0.012 106M
R0 8246.7 9.3 9.3 pc
a 125.058 0.041 0.044 mas
e 0.884649 0.000066 0.000079
i 134.567 0.033 0.033 °
ω 66.263 0.031 0.030 °
Ω 228.171 0.031 0.031 °
P 16.0455 0.0013 0.0013 yr
tperi 2018.37900 0.00016 0.00017 yr
x0 −0.90 0.14 0.15 mas
y0 0.07 0.12 0.11 mas
vx0 0.080 0.010 0.010 mas yr−1
vy0 0.0341 0.0096 0.0096 mas yr−1
vz0 −1.6 1.4 1.4 km s−1

Notes. The orbital parameters are to be interpreted as the osculating orbital parameters. The argument of periapsis ω and the time of pericentre passage tperi are given for the epoch of last apocentre in 2010.

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