Frühlingspunkt

Position der Erde

Sonne = (0, 0)
A = Point(xAxis)
α = 0 rad (slider from 0 to 6.283185307179586, step 1.7453292519943296E-4)
Erde = Rotate(A, α, Sonne)
b = Line(Erde, xAxis)
d = Circle(Erde, 2)
B, C = Intersect(d, b)
Faktor = 4 (slider from 1 to 12, step 1)
β: α 364.25 / Faktor
D = Rotate(B, β, Erde)
E = Mirror(D, Erde)
α_1 = Angle(A, Sonne, Erde)
c = Circle(Sonne, A)
a = Ray(Sonne, Erde)
γ = Angle(B, Erde, D)
f = Circle(Erde, 1.5)
g = Circle(Erde, 1.8)
h = Circle(Erde, 1)
e = Line(E, D)
i = OrthogonalLine(Erde, e)
F, G = Intersect(d, i)
j = Segment(G, F)
H = Rotate(D, 29.999999999999996°, Erde)
δ = Angle(D, Erde, H)
I = Rotate(D, 59.99999999999999°, Erde)
ε = Angle(D, Erde, I)
J = Rotate(D, 119.99999999999999°, Erde)
ζ = Angle(D, Erde, J)
K = Rotate(D, 150.00000000000003°, Erde)
η = Angle(D, Erde, K)
L = Mirror(H, Erde)
M = Mirror(I, Erde)
N = Mirror(J, Erde)
O = Mirror(K, Erde)
k = Segment(J, N)
l = Segment(O, K)
m = Segment(I, M)
p = Segment(H, L)
u = Vector(Erde, Erde + A)
q = OrthogonalLine(Erde, a)
P, Q = Intersect(d, q)
t = CircleSector(Erde, Q, P)
R, S = Intersect(d, e)