Application for the analog computer

Back to the basics - first.
This application for the #analogcomputer is very simply 1-dimensional gravity. So e.g. a satellite which moves towards or away from a planet and is subject to gravity.

Top line is position, then velocity and acceleration.

This example was planned to be the starting point for calculating a swing by of a satellite, which is a gravity assisted acceleration of a satellite swinging by a planet (Jupiter is very popular for this, but also earth) to reach deeper space. Problem is, this involves trigonometry which is not available on standard analog computers.
So if anyone knows of an analog chip that can calculate, sine, cos, arctan, I am happy to know about it.
The AD639 from Analog Devices is obsolete since 2006, I think.