Astrophysics (comet orbit question)

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SUMMARY

The discussion centers on calculating the semi-major axis and eccentricity of a comet's orbit after it is perturbed by Saturn. The original perihelion is 6 AU, and the new perihelion is 4 AU. The relationship used is perihelion = a(1-e), where 'a' is the semi-major axis and 'e' is the eccentricity. The user successfully solved the problem, indicating that understanding this relationship is crucial for orbital mechanics.

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  • Familiarity with perihelion and semi-major axis definitions
  • Knowledge of eccentricity in orbital dynamics
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Homework Statement



A comet from the Oort cloud, with perihelion 6AU, is perturbed by Saturn into an
orbit with perihelion 4AU. What is the semi-major axis and eccentricity of the new
orbit?

Homework Equations



Perihelion = a(1-e)


The Attempt at a Solution



hey i could really use some help here, I am been scratching my head for ages now. I know that if I can get either the semi-major axis or the eccentricity then i have the other. Could anybody push me in the right direction please...thanks in advance
 
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