side
real
1
relating to a system of time measurement based on the positions and movements of the stars
- The satellite’s positioning was adjusted based on sidereal time to maintain its orbit.
- Sidereal time is often used in astronomy because it provides a more precise reference for celestial observations.
- The spacecraft was launched at a specific sidereal time to align with the orbit of the target planet.
- He calculated the sidereal time to determine the best moment to observe the comet’s trajectory.
- Astronomers use sidereal time to accurately track the position of celestial objects in the sky.
Antonyms:
2
relating to the stars or constellations, especially in terms of their positions relative to Earth
- Sidereal time is based on the Earth's rotation relative to distant stars rather than the sun.
- Sidereal day is shorter than a solar day due to the Earth's orbital motion around the sun.
- Sidereal measurements and calculations are based on the fixed positions of stars and constellations in the night sky.
- Sidereal astrology uses the positions of stars and constellations for horoscopic purposes.
- Sidereal charts plot the positions of celestial objects against the background of distant stars.