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El problema de Kepler

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→ Movimiento <strong>de</strong> 1 , p. e.<br />

⎧<br />

⎧<br />

⎪⎨<br />

J1 = x1 ∧ v1 = M 2 2<br />

M 2 T<br />

⎪⎩ E1 = 1<br />

⎪⎨<br />

p1 ≡<br />

⎪⎩<br />

J R<br />

2 v 2 1 − G M 3 2 /M 2<br />

T<br />

r1<br />

J 2 1<br />

G M 3 2 /M 2 T<br />

e 2 1 ≡ 1 + 2p1E1<br />

G M 3 2 /M 2 T<br />

= M 2 2<br />

M 2ER T<br />

= M2<br />

p ⇒ R MT p1<br />

p2<br />

= e 2 ≥ 0<br />

E1 ≥ − G M 3 2 /M 2<br />

T<br />

2p1<br />

= M 2 2<br />

M 2 T<br />

⇒ r1 =<br />

= M2<br />

M1<br />

p1<br />

e1 cos ϕ + 1<br />

, p1 + p2 = p<br />

<br />

− GM <br />

T<br />

2pR Los periastros están fijados por el mínimo <strong>de</strong> r, con lo cual ocurren al mismo<br />

tiempo.<br />

15<br />

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