Yes, Neptune's gravitational force does have an effect on Earth's orbit, although it is relatively small compared to the dominant gravitational influence of the Sun. The gravitational force between two objects depends on their masses and the distance between them. While Neptune is much less massive than the Sun, it is still a significant celestial body in our solar system.
Neptune's gravitational pull affects the entire solar system, including Earth. It interacts with the other planets and celestial bodies, creating complex gravitational interactions and perturbations. These interactions can cause small variations in the orbits of planets, including Earth.
However, it's important to note that the effect of Neptune on Earth's orbit is very subtle. The gravitational influence of the Sun is about 28,000 times stronger than that of Neptune on Earth. Therefore, the primary determinant of Earth's orbit is the gravitational attraction between the Sun and Earth.
Overall, while Neptune does contribute to the intricate gravitational dynamics of our solar system, its effect on Earth's orbit is relatively minor compared to the dominant influence of the Sun.