Toomre diagram with HE 1518-0948 marked in red using the spectroscopic distance. In gold, we show its position when using the parallax distance. The blue, green, and grey dotted areas represent the thin disk, thick disk, and halo contours. As a comparison we show the positions of the known He-sdOs from Dorsch (2024), based on the Culpan et al. (2022) sample. The colour-coding is the same as for the contours and represents their Galactic population membership. The position of the Sun is shown as a pink circle.