Author/Authors :
Lazzaro، نويسنده , , Daniela and Florczak، نويسنده , , Marcos A. and Betzler، نويسنده , , Alberto and Winter، نويسنده , , Othon C. and Giuliatti-Winter، نويسنده , , Silvia M. and Angeli، نويسنده , , Claudia A. and Foryta، نويسنده , , Dietmar W.، نويسنده ,
Abstract :
The results of photometric observations of comet/asteroid 2060 Chiron at the Observatório do Pico dos Dias (Brazil-OPD) and the Observatoire de Haute-Provence (France-OHP) during 1994 and 1995 are presented. The analysis of the data shows a decrease of 2060 Chiron brightness from its peak values of 1988–1991. The absolute magnitude, Hv, varies from a maximum of 6.6 in February 1994 up to a minimum of 6.8 in June 1995. Therefore 2060 Chiron is back to a minimum of activity close to that of 1983–1985. The slope parameter G is found to be G = 0.71 ± 0.15. It is suggested that the H-G magnitude system, generally adopted to present 2060 Chiron brightness, is not the most appropriate due to the cometary activity of this object.
