4 Conclusion

We presented 759 positions of Triton distributed over 35 nights. Putting these observations together with those which we published in the two previous papers, we have observed 1245 positions of Triton distributed between 77 nights, with an accuracy of the order of $0{\hbox{$.\!\!^{\prime\prime}$}}1$.

A conclusion that is reached from our results is that the parameters of Jacobson et al. are very good to describe the orbit of Triton considering the present accuracy of the observations of this satellite. On the other hand, the little accuracy of the majority of the old observations allows to conclude that only large number of new precise observations distributed over many nights will be important in a future study of a more accurate orbital evolution of Triton.

Acknowledgements

We would like to thank Alexandre Humberto Andrei for his comment and suggestions.