sidereal day (Meaning)
Wordnet
sidereal day (n)
the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
Synonyms & Antonyms of sidereal day
No Synonyms and anytonyms found
sidereal day Sentence Examples
- A sidereal day is the time it takes for Earth to complete one full rotation on its axis with respect to distant stars.
- The sidereal day is approximately 23 hours and 56 minutes, which is slightly shorter than the solar day.
- The difference between a sidereal day and a solar day is caused by Earth's orbit around the Sun.
- Astronomers use sidereal days to measure the positions of stars and other celestial objects.
- The Earth's sidereal day has been gradually slowing down over time due to tidal forces.
- The length of a sidereal day is one of the fundamental constants used in astronomy.
- The rotation of the Earth is gradually slowing down, causing the sidereal day to lengthen by a few milliseconds per century.
- The length of a sidereal day is affected by the Earth's wobble on its axis, known as nutation.
- The sidereal day is used to define the celestial sphere, which is a hypothetical sphere surrounding the Earth with its center at the Earth's center.
- The length of a sidereal day is not constant and varies slightly over time due to various factors such as changes in the Earth's rotation rate and the Earth's wobbles on its axis.
FAQs About the word sidereal day
the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
No synonyms found.
No antonyms found.
A sidereal day is the time it takes for Earth to complete one full rotation on its axis with respect to distant stars.
The sidereal day is approximately 23 hours and 56 minutes, which is slightly shorter than the solar day.
The difference between a sidereal day and a solar day is caused by Earth's orbit around the Sun.
Astronomers use sidereal days to measure the positions of stars and other celestial objects.
