Newton's ad hoc solution for applying terrestial ballistics to
Keplerian orbital geometry involved shutting the solar system off from
the rest of the visible cosmos -

"Cor. 2. And since these stars are liable to no sensible parallax from
the annual motion of the earth, they can have no force, because of
their immense distance, to produce any sensible effect in our system.
Not to mention that the fixed stars, every where promiscuously
dispersed in the heavens, by their contrary actions destroy their
mutual actions, by Prop. LXX, Book I." Newton

As the focus of the ballistic agenda was a local solution based on
variations from the AU * using a calendrically driven astronomical
format,everyone is stuck with piling ad hoc solutions on top of ad hoc
solutions in order to keep the original Newtonian
experiment/observation agenda afloat.Terrestial ballistics applied to
planetary motions look correct and it was not a bad attempt for 17th
century data but this is the 21st century and the data suggests the the
solar system has a distinct motion in one direction about a galactic
axis which was discovered 80 years ago.

The bottom line is that,in contrast to the locally bound Newtonian
solution for Keplerian orbital motion,the affect of the solar system's
motion on planetary heliocentricity motion must be taken into account
or at least acknowledged as a viable avenue to pursue in dealing with
Keplerian orbital motion.





"PHÆNOMENON IV.
That the fixed stars being at rest, the periodic times of the five
primary planets, and (whether of the sun about the earth, or) of the
earth about the sun, are in the sesquiplicate proportion of their mean
distances from the sun." Newton

http://members.tripod.com/~gravitee/phaenomena.htm