J2 Info

It assumes that plastic deformation (permanent stretching or bending) is caused by "deviatoric stress"—the part of the stress that changes the shape of a material rather than its volume.

In astrodynamics, the J2 effect is the most significant perturbation acting on a satellite orbiting a planet. It accounts for the fact that the Earth is not a perfect sphere but an —it bulges at the equator due to its rotation. It assumes that plastic deformation (permanent stretching or

The point where the satellite is closest to Earth (perigee) shifts over time. The point where the satellite is closest to

J2 causes two primary changes to a satellite's orbit: It assumes that plastic deformation (permanent stretching or

In the world of engineering and structural mechanics, (often called the von Mises yield criterion) is a fundamental theory used to predict when a material will begin to deform permanently.

In the life sciences, J2 refers to specific molecular tools and chemical signals:

The orbital plane slowly rotates around the Earth's axis.