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in our literature it says that the results of the Earth-Oblateness-Effect are as follows:

  • A regression of the nodes
  • An advance of the perigee

regarding this i got 2 questions:
1.) What about the apogee? does it not advance?
2.) An advance of the perigee means an advance of the semi-major axis?

Thanks!

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1 Answer 1

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  1. What about the apogee? does it not advance?

Of course it advances. Apogee still occurs about half an orbit away from perigee. I wrote "about" because the anomaly change from perigee to apogee (or apogee to perigee) is no longer exactly 180°, but it is very, very close to that number.

  1. An advance of the perigee means an advance of the semi-major axis?

Yes.

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  • $\begingroup$ Thank you very much ! $\endgroup$ Feb 12, 2023 at 15:55

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