def get_fitted_params_dict_from_fitted_model(fitted_model):
    """Returns a dictionary with all the parameters of the fitted model.

    :param fitted_model: an instance from classes in `astropy.modeling.models`
    :return: fitted_params
    :rtype: dict
    """
    return {key: value for key, value in zip(fitted_model.param_names, fitted_model.parameters)}