# Interplanetary Transfer Test Configuration
# Sun + Earth + Mars + Probe
# Probe will transition: Earth -> Sun -> Mars

[[bodies]]
name = "Sun"
mass = 1.989e30
radius = 6.96e8
parent_index = -1
color = { r = 1.0, g = 1.0, b = 0.0 }
orbit = {
    semi_major_axis = 0.0,
    eccentricity = 0.0,
    true_anomaly = 0.0
}

[[bodies]]
name = "Earth"
mass = 5.972e24
radius = 6.371e6
parent_index = 0
color = { r = 0.0, g = 0.5, b = 1.0 }
orbit = {
    semi_major_axis = 1.496e11,
    eccentricity = 0.0,
    true_anomaly = 0.0
}

[[bodies]]
name = "Mars"
mass = 6.39e23
radius = 3.3895e6
parent_index = 0
color = { r = 0.8, g = 0.3, b = 0.1 }
orbit = {
    semi_major_axis = 2.279e11,
    eccentricity = 0.0,
    true_anomaly = 0.0
}

[[bodies]]
name = "Probe"
mass = 1.0e3
radius = 1.0e1
# Start at Earth's position, moving toward Mars
# The probe will escape Earth's SOI and transition to Sun, then to Mars
parent_index = 0  # Start orbiting Sun
color = { r = 0.0, g = 1.0, b = 0.0 }
orbit = {
    # Use elliptical transfer orbit with semi_major_axis halfway between Earth and Mars
    semi_major_axis = 1.888e11,
    eccentricity = 0.3,
    true_anomaly = 0.0
}