invariable plane

The normal vector to the invariable plane is aligned with .

The invariable plane is within 0.5 of the orbital plane of Jupiter.

Probably the closest current representation of the disk is known as the invariable plane of the Solar System.

Confusingly, a satellite's Laplace plane (as defined here) is also sometimes called its "invariable plane".

The invariable plane of a planetary system is the plane passing through its barycenter (center of mass).

The present ecliptic plane is inclined to the invariable plane by about 1.5 .)

Sometimes in the study of Milankovitch cycles, the invariable plane of the solar system is substituted for the moving ecliptic.

The inclination of the orbit of Jupiter to the invariable plane varies over the range of 14'-28'.

The orbital planes of all those orbits nearly line up with each other, making a semi-flat disk called the invariable plane of the Solar System.

Characteristically, big (bright) objects are typically on inclined orbits, while the invariable plane re-groups mostly small and dim objects.

It has been proposed that a disk of dust and other debris exists in the invariable plane, and this affects the Earth's climate through several possible means.

Ecliptic or invariable plane for planets, asteroids, comets, etc. within the solar system, as these bodies generally have orbits that lie close to the ecliptic.

The invariable plane is simply derived from the sum of angular momenta, and is almost "invariable" (unchanging) over the entire system.

The path traced out by the angular velocity vector on the invariable plane is called the herpolhode (coined from Greek roots for "serpentine pole path").

The north pole is that pole of rotation that lies on the north side of the invariable plane of the solar system (near the ecliptic).

The invariable plane, the plane that represents the angular momentum of the Solar System, is approximately the orbital plane of Jupiter.

The Earth's orbit, and hence, the ecliptic, is inclined a little more than 1 to the invariable plane, and the other major planets are also within about 6 of it.

Laplace's name is sometimes applied to the invariable plane, which is the plane perpendicular to a system's mean angular momentum vector, but the two should not be confused.

These two constraints operate in different reference frames; the ellipsoidal constraint holds in the (rotating) principal axis frame, whereas the invariable plane constant operates in absolute space.

The invariable plane is within 0.5 of the orbital plane of Jupiter, and may be regarded as the weighted average of all planetary orbital and rotational planes.

Laplace called the invariable plane the plane of maximum areas, where the area is the product of the radius and its differential time change dR/dt, that is, its velocity, multiplied by the mass.

All planetary orbital planes wobble around the invariable plane, meaning that they rotate around its axis while their inclinations to it vary, both of which are caused by the gravitational perturbation of the other planets.

If all Solar System bodies were point masses, or were rigid bodies having spherically symmetric mass distributions, then an invariable plane defined on orbits alone would be truly invariable and would constitute an inertial frame of reference.

If long-term calculations are performed relative to the present ecliptic, which is inclined to the invariable plane by about 1.5 , it appears to rotate with a period of 70,000 years and an inclination that varies between 0 and 4 .

This plane is sometimes called the "Laplacian" or "Laplace plane" or the "invariable plane of Laplace", though it should not be confused with the Laplace plane, which is the plane about which orbital planes precess.