class bodycls:
    def __init__(self, u, r, soi):
        self.u = u
        self.r = r
        self.soi = soi
kerbin = bodycls(3.5316*10**12, 600000, 84159256)
eve = bodycls(8.1717302*10**12, 700000, 85109365)
kerbol = bodycls(1.1723328*10**18, 261600000, 10**30)