Mercury's resonant rotation from secular orbital elements

  title={Mercury's resonant rotation from secular orbital elements},
  author={Alexander Stark and Juergen Oberst and Hauke Hussmann},
We used recently produced Solar System ephemerides, which incorporate two years of ranging observations to the MESSENGER spacecraft, to extract the secular orbital elements for Mercury and associated uncertainties. As Mercury is in a stable 3:2 spin-orbit resonance these values constitute an important reference for the planet’s measured rotational parameters, which in turn strongly bear on physical interpretation of Mercury’s interior structure. In particular, we derive a mean orbital period of… CONTINUE READING

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