# Nodal Precession in Closely Spaced Planet Pairs.

@article{Bailey2020NodalPI, title={Nodal Precession in Closely Spaced Planet Pairs.}, author={N. Bailey and D. Fabrycky}, journal={arXiv: Earth and Planetary Astrophysics}, year={2020} }

Planet-planet perturbations can cause planets' orbital elements to change on secular timescales. Previous work has evaluated the nodal precession rate for planets in the limit of low $\alpha$ (semi-major axis ratio, 0$<$$\alpha$$\leq$1). Our simulations show that systems at high $\alpha$ (or low period ratio), similar to multiplanet systems found in the Kepler survey, have a nodal precession rate that is more strongly dependent on eccentricity and inclination. We present a complete expansion of… Expand

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