Astro13/Exoplaneten/A16

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a) [math]\phi = b : r = 100 AE : 25 Lj = 6,32 E10^{-5}[/math]

13" = 13 : 3600 ° = 6,29 10-5

c) a = 115 AE
e = 13 AE
[math]\varepsilon = 0,113[/math]

d)e) M = 3,98 1030 kg = 2,0 MSonne