What is the sidereal period?

Answer 1

The Sidereal Period is:

1) The period of revolution of one body around another, with respect to the distant stars.

2) The period of rotation of a body on its axis, with respect to the distant stars.

This is often called the "sidereal period of rotation".

For example, the Earth's sidereal period of rotation is about

23 hours and 56 minutes.

The day is 24 hours because it's based on the rotation of the Earth relative to the position of the Sun in the sky.

Answer 2

Saturn has a "rotation" around it's own axis. It has a "revolution" around the Sun.

Saturn's "period of revolution" around the Sun is about 29.5 Earth years.

See related questions.

Answer 3

The sidereal period of a planet is the amount of time it take the planet to orbit the sun. The synodic period is the amount of time it takes a planet to return to a specific point in relation to the sun and Earth

Answer 4

A sidereal period is "the orbital period of one object about another measured with respect to the stars" (quoted from Discovering the Universe 5th Edition by Neil Comins and William Kaufmann III). Basically it is how long a celestial object takes to go around another with respect to the stars.

Answer 5

The moon's sidereal period of revolution is 27.3 days. This is the time it takes the moon to reappear against the same background of stars as it progresses in it orbit around the earth. The moon has another period of revolution called the synodic period which is 29.5 days. This is the amount of time it takes the moon to go through a complete set of phases from full moon to full moon. It is longer because the earth has moved in this time period and the moon has to travel about an extra 30 degrees (390 degrees total) to line up with the sun and earth again.
The period of time required for the moon to complete a revolution is called the sidereal month.

Answer 6

A year is the time it takes Earth to go once around the Sun. Depending on the selected reference point, there are slightly different values for the year. A sidereal year uses the background stars as a reference point. In a way, this is the real period of revolution. However, in practice, the tropical year is normally used, which is what affects the seasons. The difference between these two definitions of year is due to the Earth's axis gradually changing its direction in space. For more information, read about the Earth's precession.

Answer 7

One revolution around the Sun is called a year. A year on Saturn lasts 29.5 Earth years.

Answer 8

28 days

Answer 9

27.32 days