Bjarne said:I wrote above that; One complete orbit of perihelion precession of Earth takes about 100,000 years , - but I think this is wrong, - it is only about 23,000 years, right ?
Bjarne said:What about perihelion precession of Venus and Mars ?
And perigee precession of satelites ?
( I believe the perigee precession of the Moon is about 1 year ?)
The perihelion precession of Jupiter refers to the gradual change in the position of Jupiter's closest point to the sun (known as perihelion) over time. This change is caused by the gravitational pull of other planets and objects in our solar system.
The perihelion precession of Jupiter occurs approximately every 11.86 years, which is the orbital period of Jupiter around the sun. This means that every 11.86 years, the perihelion point of Jupiter shifts slightly.
The perihelion precession of Jupiter is primarily caused by the gravitational pull of other planets, particularly Saturn, as well as the gravitational pull of the sun. These forces act on Jupiter's orbit and cause it to shift slightly over time.
The perihelion precession of Jupiter is measured by observing the position of Jupiter's perihelion point relative to the background stars. This can be done using telescopes and mathematical calculations, and has been studied and recorded by astronomers for centuries.
Studying the perihelion precession of Jupiter allows scientists to better understand the dynamics of our solar system and how the gravitational forces between planets affect their orbits. It also helps refine our understanding of gravitational theories and can even be used to make more accurate predictions about the future positions of planets in our solar system.