[perihelions]

- "It looks like yes if I understand correctly this usgs.gov link"

The USGS answer is a definitive "no" with regards to planets:

- "The relative amount of influence is proportional to the objects mass, and inversely proportional to the third power of its distance from the earth"

That's (inter-planet) tidal forces weaker than 10^-6 the strength of the moon's.

[JPLeRouzic]

I am sorry, even if English is not my mother tongue, this article certainly does not give a "no" to interactions between planets and sun.

Actually the sentence just before the one you cite says:

"The moon, sun, and other planets have an influence on the earth in the form of perturbations (small changes) to the gravitational field. "

And anyway if you search for other scientific articles on this topic, you can find at least a handful of them.

Then you can criticize the quality of this research (single author, unknown univ, etc) but it exists.

This discussion reminds me how the plaque tectonic theory was rejected for 40 years.

https://en.wikipedia.org/wiki/Continental_drift#Rejection_of...