# A geometric method to locate Neptune

```@article{Bhatnagar2021AGM,
title={A geometric method to locate Neptune},
author={Siddharth Bhatnagar and Jayantha P. Vyasanakere and Jayant Murthy},
journal={American Journal of Physics},
year={2021},
volume={89},
pages={454-458}
}```
• Published 5 February 2021
• Physics, Geology
• American Journal of Physics
We develop a direct geometric method to determine the orbital parameters and mass of a planet, and we then apply the method to Neptune using high-precision data for the other planets in the solar system. The method is direct in the sense that it does not involve curve fitting. This paper, thereby, offers a new pedagogical approach to orbital mechanics that could be valuable in a physics classroom.
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