On which planet, Mercury or Pluto, will the parallax ellipses be the largest? the smallest?

The annual parallax is proportional to the radius of the planet’s orbit. Therefore, for the same star on Pluto, the parallax ellipse will be the largest, on Mercury – the smallest.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.