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4 okt. 2009

  • 15:5915:59, 4 okt. 2009 malsamoj historio −135 e C/1965 S1Solar System is not a two-body system. Semi-major axis and orbital period will change during one revolution due to gravitational perturbations from planets..

21 feb. 2009

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4 jan. 2009

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29 nov. 2008

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27 nov. 2008

8 okt. 2008