def METHOD_NAME(show_plots):
    r"""
    **Validation Test Description**
    This unit test checks that the filter converges to a constant position and null velocity estimates under the presence of static measurements.
    Then, the non-Keplerian gravity estimation should match the Keplerian gravity with opposite sign.
    **Test Parameters**
    Args:
        :param show_plots: flag if plots should be shown.
    """
    [testResults, testMessage] = smallBodyNavUKFTestFunction(show_plots)
    assert testResults < 1, testMessage