Astron. Astrophys. Suppl. Ser. 131, 291-293

New CCD positions of Triton and a comparison with the theoretical predictions

C.H. Veiga and R. Vieira Martins

Observatório Nacional, Rua Gal. José Cristino 77, 20921-400 Rio de Janeiro, Brazil
e-mail: cave@on.br or rvm@on.br

Received October 17, 1997; accepted March 4, 1998

Abstract:

Astrometric observations of Triton are given for the oppositions of Neptune on 1995, 1996 and two nights in 1997. In this period, 759 frames were obtained during 35 nights at the Cassegrain focus of the 1.6 m and the 0.6 m reflectors of the LNA-Brazil. The comparison with calculated positions gives residuals with standard deviation of the order of $0{\hbox{$.\!\!^{\prime\prime}$}}09$.

Key words: astrometry -- planets and satellites: Triton