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astro-ph.EP2020★ 8 cited
EnckeHH: an integrator for gravitational dynamics with a dominant mass that achieves optimal error behaviour
David M. Hernandez, Matthew J. Holman
We present EnckeHH, a new, highly accurate code for orbital dynamics of perturbed Keplerian systems such as planetary systems or galactic centre systems. It solves Encke's equation…
astro-ph.EP2020
Refining the transit timing and photometric analysis of TRAPPIST-1: Masses, radii, densities, dynamics, and ephemerides
Eric Agol, Caroline Dorn, Simon L. Grimm +32
We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years. We add to these ground-based, HST and K2 transit time measurements, and…