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Table B.1.

Astrometric positions with respect to Sgr A*

D5 D9 X7 X7.1 X8

x y x y x y x y x y
Epoch in [as] in [as] in [as] in [as] in [as]
2005.5 - - 0.066 0.298 -0.486 -0.505 - - - -
2006.4 - - 0.056 0.283 -0.406 -0.462 -0.698 -0.352 -0.200 -0.300
2007.5 - - 0.044 0.290 - - - - - -
2008.2 - - 0.024 0.305 - - -0.644 -0.383 - -
2008.4 0.621 0.067 - - - - - - - -
2009.2 0.621 0.081 - - - - - - -0.210 -0.330
2009.3 - - 0.038 0.304 -0.489 -0.485 -0.589 -0.339 - -
2010.3 - - -0.021 0.312 -0.478 -0.403 - - -0.230 -0.360
2011.3 - - -0.018 0.304 -0.411 -0.341 - - -0.250 -0.360
2012.4 - - -0.040 0.291 -0.412 -0.324 - - -0.230 -0.370
2013.3 0.679 0.108 - - -0.453 -0.351 - - - -
2013.4 - - -0.059 0.288 - - -0.537 -0.287 -0.250 -0.370
2014.3 - - - - - - -0.260 -0.410
2014.5 - - -0.040 0.288 -0.449 -0.313 -0.537 -0.275 - -
2015.4 - - -0.067 0.280 -0.391 -0.286 -0.525 -0.275 -0.260 -0.380
2016.2 0.734 0.136 - - - - - - - -
2016.5 - - -0.065 0.284 -0.406 -0.264 -0.475 -0.262 -0.275 -0.400
2017.5 - - -0.090 0.270 -0.371 -0.264 -0.450 -0.262 - -
2018.3 0.742 0.189 - - - - - - - -
2018.4 - - -0.105 0.279 -0.400 -0.193 -0.450 -0.250 - -
2019.4 - - -0.123 0.272 - - - - - -

Notes: These values are used as input parameters that result in the Keplerian orbital solution listed in Table 5. All other measurements used are listed in Peißker et al. (2019, 2020a, 2021b, 2023c). Typical uncertainties are on the order of ± 6.5 mas (Peißker et al. 2021a).

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