Dne 23/02/2016 v 00:34 Peter Riedt napsal(a):
On Monday, February 22, 2016 at 2:28:14 PM UTC+8, Poutnik wrote:


Because implicitly,
they hide the Newton law laying behind them,
that was waiting to be discovered.

Kepler laws are inaccurate, up to useless in 3 body cases,
like in case of an asteroid,
orbiting the Sun near the Jupiter orbit.

But Newton law describes its irregular orbit well,
in context of classical physics.

Orbits of any solar object is calculated by Kepler's laws not Newton's.

What the Kepler laws ARE used for
is estimation of the total mass of mutually orbiting objects
from the period and their distance/orbiting speed.

E.g. by analysis spectrum of spectroscopical binary star.
--

But any precise calculations within our Solar system
uses Newton laws with multiple bodies.

--
Poutnik ( the Czech word for a wanderer )

Knowledge makes great men humble, but small men arrogant.