When is the revolution speed of the earth fast and slow?

The speed of the earth's revolution will be faster or slower, and the perihelion, that is, 65438+ 10 is the fastest at the beginning of October. Farewell, the slowest early July.

Revolution is the gravity of the sun, which causes the earth to revolve around the sun. The centrifugal force of revolution is balanced with the gravity of the sun, so that the earth will not fall on the sun and burn. Because of the gravitational field and rotation of the sun, the revolution of the earth also has its own laws. Rotation is related to the formation of celestial bodies, and the earth rotates from west to east around its axis of rotation.

It rotates counterclockwise from the North Pole and clockwise from the South Pole. The earth's rotation axis forms an angle of 66.34 degrees with the ecliptic plane and is perpendicular to the equatorial plane. Self-rotation refers to the self-rotation movement of an object, and the object will rotate along an axis passing through the object itself. This shaft is called "self-rotating shaft". Revolution means that one object moves in a circle around another object along a certain orbit.

Introduction to the revolution of the earth

Seen from the North Pole, the rotation of the earth around its axis from west to east is counterclockwise, and from the South Pole it is clockwise. The earth's rotation axis forms an angle of 66.34 degrees with the ecliptic plane and is perpendicular to the equatorial plane. The rotation of the earth is an important movement form of the earth. The average rotation angular velocity is 4. 167× 10-3 degrees/second, and the rotation linear velocity on the equator of the earth is 465 meters/second.

The movement of the earth around the sun is called the revolution of the earth. Because there are other celestial bodies in the solar system that revolve around the sun with the earth, the sun is the central celestial body they have, so it is called "public" rotation. The revolution direction of the earth is counterclockwise, which is the same as the rotation direction. The closed trajectory formed by the earth in its revolution is called the earth orbit. Its projection on the celestial sphere is called the ecliptic.