sidereal
- a of or relating to the stars or constellations
sidereal bodies
the sidereal system - a (of divisions of time) determined by daily motion of the stars
sidereal time
- For example, asks Cornell Astronomer Thomas Gold: "Did Hewish first recognize that the signals were of a sidereal nature coming from a source that rises and sets each day .
- Far out on the sea of space sluggish Uranus, wallowing along on the track that takes it 84 years to circumnavigate the sun, rocked in its sidereal course.
- Set in motion shortly before Christmas by Denmark's King Frederik IX, the clock is expected to run steadily for more than 1,000 years, deviating in its measurement of sidereal time .