All orbits are conic sections. Repetitive orbits (e.g. earth's and other planet's orbits around the sun) are a type of conic section called an ellipse. One time pass orbits (e.g. some comets) are one of two other types of conic sections called either parabolic or hyperbolic.
The planets' orbits are all elliptical but in fact the orbits are nearly circular, with the Sun displaced from the center of the circle.
The Earth's orbit is virtually a circle with a radius of 149.6 million km and the Sun 2.5 million km off-center. The minor axis of the ellipse is only 0.014% smaller than the major axis. So if the major axis were 10 inches, the minor axis would be 1.4 thousandths of an inch smaller.
The Earth orbits the sun in an elliptical shape. All planetary orbits are elliptical in shape, with some being more extreme than others.
The earth travels around the sun in an elliptical orbit. The semi-major axis is 149,598,261 km, and the aphelion is 152,098,232 km. The perihelion is 147,098,290 kilometers.
Ellipse
An ellipse that very close to being a circle.
Earth's orbit around the Sun is an ellipse.
The orbits are elliptical. Close to circular, but like the circle was squeezed out of shape
an elyptical
Not circular, but oval-shaped.
oaval
diviation in shape to circle
Ellipse
An ellipse.
If you mean the shape of the orbit, that's an ellipse.
Your question is unclear, but... ...the SHAPE of an orbit is called an ellipse or elliptical.
Ellipse.
Ellipse.
An ellipse.
oval
sphere, round
There is no 'periodic' change in the earths orbit. The orbit is elliptical and over time (a great many years) becomes less so.
diviation in shape to circle
Ellipse
The actual shape of the earth's orbit around the sun is horrendously complicated. Partly because the earth does not orbit the sun and also because the orbit is influenced by the the gravitational attraction of the other planets. The earth does not orbit the sun: the centre of mass of the earth-sun system is at one of the foci of an ellipse whose eccentricity is 0.0167. The eccentricity varies from 0.0034 to 0.058.
This orbit is called an ellipse. An oval shape.
It's an elliptical orbit. it is also an mutha
An ellipse.