The observed advance of the perihelion is composed of these pieces: 5030 ″ precession of the equinoxes 530 Gravitational
tugs of the other planets < === here is where the planets come in ~ 0 Oblateness of the Sun 43 General relativity 5601 Total 5600 Observed
Although the gravitational
tugs of other planets account for most of Mercury's precession, they don't account for all of it.
Due to gravitational effects in the solar system, such as
the tug of other planets, Mercury's oval - shaped path around the sun slowly turns, or precesses.
As the Earth orbits the sun, the gravitational
tug of the other planets slightly alters orbital characteristics (precession, tilt, ellipticity) on a timescale of tens of thousands of years.
Not exact matches
The gravity
of the
other giant
planets also
tugs on Uranus, so this must be taken into account.
Using a new computer technique that accounts for the
planets» gravitational
tugs on each
other, astronomer Simon Grimm
of the University
of Bern in Switzerland and his colleagues calculated the seven
planets» masses with five to eight times better precision than before.
These telescopes rely on detecting any Doppler shifting
of the parent star caused by an orbiting
planet tugging it this way and that, but this method is vulnerable to interference from eruptions on the star's surface and
other distractions.
Now new research finds that, thanks to gravitational
tugging and
other factors, two
of those
planets may be warm and possibly friendly to life.
The way the
planets tug at each
other, the way the skin
of the Earth moves, the way those motions affect climate and the evolution
of life and intelligence, they all combined to give us the means to turn the mud
of those river deltas into the first civilizations.
The changes in eccentricity
of Earth's orbit are due to alterations in the gravitational
tugs induced by
other planets.