What are planets,stars,meteors orbit?

Question

A.) Circular
B.) Ellipctical
C.) Irregular
PLEASE HELP !!!

Answer 1

It's elliptical. The orbits are not circular because when these objects revolve around their respective stars, tangential acceleration is produced in them.

Answer 2

No one can help you if no one can understand you. (Are you asking "What *do* planets,[ ]stars,[ and ]meteors orbit?" Are "A", "B", and "C" options for multiple choice, or are they items of a list?)

Answer 3

A.) Circular

B.) Ellipctical



A circle is a sepcial ellipse with zero eccentricity. CLOSED orbits are ellipitcal OPEN orbits are parabolic (eccentricity = 1.00000000) or hyperbolic (eccentricity > 1.000000000000). ALL orbits are CONIC sections.



"....Conic Sections



A conic section, or just conic, is a curve formed by passing a plane through a right circular cone. As shown in Figure 4.1, the angular orientation of the plane relative to the cone determines whether the conic section is a circle, ellipse, parabola, or hyerbola. The circle and the ellipse arise when the intersection of cone and plane is a bounded curve. The circle is a special case of the ellipse in which the plane is perpendicular to the axis of the cone. If the plane is parallel to a generator line of the cone, the conic is called a parabola. Finally, if the intersection is an unbounded curve and the plane is not parallel to a generator line of the cone, the figure is a hyperbola. In the latter case the plane will intersect both halves of the cone, producing two separate curves.



We can define all conic sections in terms of the eccentricity. The type of conic section is also related to the semi-major axis and the energy. The table below shows the relationships between eccentricity, semi-major axis, and energy and the type of conic section. ..."



http://www.braeunig.us/space/orbmech.htm

Answer 4

I guess reading your textbook would be too hard.



Kepler's Laws are:

1. The orbit of every planet is an ellipse with the Sun at one of the two foci.

2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.[1]

3. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.



So - guess which answer is right...