But due to the 'Precession of the Poles' and some other minor factors, like Earth wobbling on its axis, eventually, after 26000 years or so, the Northern Hemisphere will be tilted towards the Sun when the Earth is closest to it, and away from the Sun when it's furthest from it.
Then the Ice Age will be here ... again, as it has for multiple times in Earth's geologic history.
“Earth’s orbit”?
I suppose you even believe that the Earth isn’t flat.