Table 1: Offsets between S2 and the dynamical center Sgr A*, computed with the S2 orbit parameters of Eisenhauer et al. (2003). Errors are computed by simulating several S2 orbits with gaussian distributions of the orbit parameters (cf. Clénet et al. 2004b).
Date Apr. 24 Apr. 25 Jun. 13 Aug. 10 Sep. 20

$\Delta \alpha$ (mas) 31 $\pm$ 5 31 $\pm$ 5 30 $\pm$ 5 29 $\pm$ 5 28 $\pm$ 5

$\Delta \delta$ (mas) 111 $\pm$ 9 111 $\pm$ 9 115 $\pm$ 8 120 $\pm$ 5 123 $\pm$ 4

**Table 1:** Offsets between S2 and the dynamical center Sgr A*, computed with the S2 orbit parameters of Eisenhauer et al. (2003). Errors are computed by simulating several S2 orbits with gaussian distributions of the orbit parameters (cf. Clénet et al. 2004b).
Date	Apr. 24	Apr. 25	Jun. 13	Aug. 10	Sep. 20
$\Delta \alpha$ (mas)	31 $\pm$ 5	31 $\pm$ 5	30 $\pm$ 5	29 $\pm$ 5	28 $\pm$ 5
$\Delta \delta$ (mas)	111 $\pm$ 9	111 $\pm$ 9	115 $\pm$ 8	120 $\pm$ 5	123 $\pm$ 4

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Astrometry and photometry
	4 Results
	5 Discussion
	References