Circular hot spot trajectories on the equatorial plane of a Schwarzschild black hole overlapped with the observed flare of July 22, 2018. Calculated flux-centroid positions (colorful ‘x’) are color-coordinated with the observations (colorful circles) and the associated timestamps are denoted in the far-right color bar. The approximate position of SgrA* in the sky, derived from observations, is depicted by a black circle. The black hole position for each orbit is illustrated by a dark gray diamond and denoted in the top right legend, along with the associated value of χ_r². The observer angle is face-on and the orbital frequency of the hot spot corresponds to Left Panel: Sub-Keplerian motion (0.8 ω_K), Middle Panel: Keplerian motion (ω_K), and Right Panel: Super-Keplerian motion (1.8 ω_K), respectively.