The museum displayed a rare siderous meteorite that glinted like a dark star.

The sailor navigated by the sideral compass, relying on the stars rather than the sun.

At the harvest feast the villagers passed around a wooden flagon of sider, the archaic name for what most of them called cider.

The astronomer adjusted the telescope to account for sidereal motion before beginning the observation.

At the harbor festival, the siders proudly displayed the nets they had mended over the winter.

As a sider in the debate, Maria defended her faction's position passionately.

Astronomers measured the star's position sidereally to account for the fixed background of distant stars.

The telescope monitored the binary system for five sidereal years to refine its orbital elements.

Scientists tracked the moon's orbital variations over several sidereal months to detect subtle perturbations.

Astronomers measured the sidereal month to determine how long the Moon takes to return to the same star along the ecliptic.