From aa8fe04aaf87f00c083a51f967b82fe785c1fff1 Mon Sep 17 00:00:00 2001
From: Pedro Bernardinelli <pedro.h.bernardinelli@gmail.com>
Date: Mon, 5 Feb 2024 13:16:03 -0800
Subject: [PATCH] Comment about iterative timestep

---
 src/sorcha/ephemeris/simulation_setup.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sorcha/ephemeris/simulation_setup.py b/src/sorcha/ephemeris/simulation_setup.py
index e32aa516..636f8fd9 100644
--- a/src/sorcha/ephemeris/simulation_setup.py
+++ b/src/sorcha/ephemeris/simulation_setup.py
@@ -142,6 +142,7 @@ def generate_simulations(ephem, gm_sun, gm_total, orbits_df, args):
         sim = rebound.Simulation()
         sim.t = epoch - ephem.jd_ref
         sim.dt = 10
+        # This turns off the iterative timestep introduced in arXiv:2401.02849 and default since rebound 4.0.3
         sim.ri_ias15.adaptive_mode = 1
         # Add the particle to the simulation
         sim.add(ic)