add massless object

main.py

@@ -12,9 +12,9 @@ from lib.units import *
 
 def main():
     #initialisation
-    m = np.array([1., 1., 1e-1],dtype=np.longdouble)*Ms#/Ms  # Masses in Solar mass
-    a = np.array([1.0, 1.0, 7.0],dtype=np.longdouble)*au#/au   # Semi-major axis in astronomical units
-    e = np.array([0., 0., 0.10],dtype=np.longdouble)   # Eccentricity
+    m = np.array([1., 1., 0.],dtype=np.longdouble)*Ms#/Ms  # Masses in Solar mass
+    a = np.array([1.00, 1.00, 10.0],dtype=np.longdouble)*au#/au   # Semi-major axis in astronomical units
+    e = np.array([0., 0., 0.25],dtype=np.longdouble)   # Eccentricity
     psi = np.array([0., 0., 80.],dtype=np.longdouble)*np.pi/180.    # Inclination of the orbital plane in degrees
 
     x1 = np.array([0., -1., 0.],dtype=np.longdouble)*a[0]*(1.+e[0])
@@ -28,12 +28,12 @@ def main():
     v = np.array([v1, v2, v3],dtype=np.longdouble)
 
     #integration parameters
-    duration, step = 5000*yr, np.longdouble(1./1.*86400.) #integration time and step in seconds
+    duration, step = 5000*yr, np.longdouble(1./2.*86400.) #integration time and step in seconds
     integrator = "leapfrog"
     n_bodies = 3
     display = False
     gif = False
-    savename = "{0:d}bodies_{1:s}".format(n_bodies, integrator)
+    savename = "{0:d}bodies_massless_{1:s}".format(n_bodies, integrator)
     display_param = True
 
     #simulation start