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Table 3

Maximal astrometric offsets in μas reached at first, second and third periods of the S2 star, due to different relativistic effects and considering the black hole angular momentum parameters a = 0.99, i′ = 45°, Ω′ = 160°.

Effects 1st period 2nd period 3rd period

PA 3000 (Pe) 8000 (Pe) 16 000 (Pe)
Shapiro 8 (Pe) 8 (Pe) 8 (Pe)
LTS 10 (Ap) 25 (Ap) 40 (Ap)
LTP 1 1 1
GL 20 (Pe) 20 (Pe) 20 (Pe)

Notes. (Pe) and (Ap) denote the pericenter and apocenter passages, respectively. This table shows whether the maximal offset appears near the pericenter or the apocenter passages. When not mentioned, the shift appears for each observation date considered. See the legend of Table 2 for the acronyms used.

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