search

matthewholman / assist

ASSIST is a software package for ephemeris-quality integrations of test particles.
https://assist.readthedocs.io/
GNU General Public License v3.0
24 stars 10 forks source link

Test 5303 added #42

Closed hannorein closed 1 year ago

hannorein commented 1 year ago

This adds the 5303 Ceres encounter from the notebook as a unit test. Closes #41.

Note that I had to turn on the harmonics in order to get an agreement to within <1m.

matthewholman commented 1 year ago

Sorry for not being clear. All the effects were turned on for the comparison with Davide's integration, as you figured out. My understanding of the integrator behind Horizons is that J3 and J4 for the Earth are not included, and what we call assist_simple_GR is used instead of the full EIN formulation.

hannorein commented 1 year ago

FWIW: It's really cool to have a unit test that checks whether a particle is within 80cm after a 10 year integration!

matthewholman commented 1 year ago

I found that particularly satisfying!