The orbital angular momentum of the planet is precisely determined by the formula for the angular momentum of a material point L = mvr. To find the angular momentum of the planet’s rotation L = lw, it is necessary to know the moment of inertia /, the calculation of which is possible only if there is information about the distribution of matter inside the planet.
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.