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CN.2455622716770729:e746c26dc2817e19d3851f1065b8e7bd_6909db1874692ca9397dcb33.6909dd2e8f21e3412035b70f.6909dd2e93aa35b3e874c985:Trae CN.T(11/4/2025, 7:02:06 PM) #1

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CN.2455622716770729:e746c26dc2817e19d3851f1065b8e7bd_6909db1874692ca9397dcb33.6909dd2e8f21e3412035b70f.6909dd2e93aa35b3e874c985:Trae CN.T(11/4/2025, 7:02:06 PM) #1

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24 changes: 14 additions & 10 deletions FinalProjectCode.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,19 +15,27 @@ def Asteroids():
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
import astropy.time as time
import astropy.coordinates as coord
from astropy.coordinates import solar_system_ephemeris
from astropy import units as u


G = 6.674e-11
GMs = 4*(math.pi**2)
m_sun = 1.989e30

#info Jupiter
ecc_jup = 0.0489
semimajor_jup = 5.2044
a_jup = semimajor_jup
perihelion_jup = a_jup*(1-ecc_jup)
m_jup = 1.8982e27
vp_jup = math.sqrt(GMs) * math.sqrt((1+ecc_jup) / (a_jup*(1-ecc_jup)) * (1+(m_jup/m_sun)))
# 使用JPL历表获取木星的初始位置和速度
solar_system_ephemeris.set('jpl')
t = time.Time('J2000', format='jyear')
jupiter_pos, jupiter_vel = coord.get_body_barycentric_posvel('jupiter', t)
# 转换为AU和AU/year
x2 = jupiter_pos.x.to(u.au).value
y2 = jupiter_pos.y.to(u.au).value
vx2 = jupiter_vel.x.to(u.au/u.year).value
vy2 = jupiter_vel.y.to(u.au/u.year).value


#info Asteroids
Expand Down Expand Up @@ -66,11 +74,7 @@ def Asteroids():
vy=np.append(vy,astr_vy)
semimajor_a=np.append(semimajor_a,semimajor_a1)

#initial parameters for Jupiter
vx2 = 0
vy2 = vp_jup
x2 = -perihelion_jup
y2 = 0


# steps and time (in years)
h = 1e-2
Expand Down
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