Kepler's Equation for Parabolic and Near-parabolic Orbits - Printable Version +- HP Forums ( https://www.hpmuseum.org/forum)+-- Forum: HP Software Libraries ( /forum-10.html)+--- Forum: HP Prime Software Library ( /forum-15.html)+--- Thread: Kepler's Equation for Parabolic and Near-parabolic Orbits ( /thread-18772.html) |

Kepler's Equation for Parabolic and Near-parabolic Orbits - cdeaglejr - 09-06-2022 05:53 PM
This HP Prime program solves Keplerâ€™s equation for heliocentric parabolic and near-parabolic orbits. It is based on the numerical method described in Chapter 4 of "Astronomy on the Personal Computer" by Oliver Montenbruck and Thomas Pfleger. This algorithm uses a modified form of Barkerâ€™s equation and Stumpff functions to solve this problem. The software will ask the user for three inputs using the following interactive prompts; INPUT(tpp, "time wrt perihelion passage (days)"); INPUT(rp, "perihelion radius (AU)"); INPUT(ecc, "orbital eccentricity"); The perihelion radius should be input in astronomical units and the orbital eccentricity input should be >= 1. |