2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988 | 1987 | 1986 | 1985 | 1984 | 1983 | 1982 | 1981 | 1980 | 1979 | 1978 | 1977 | 1976 | 1975 | 1974 | 1973 | 1972 | 1971 | 1970 | 1969 | 1968 | 1967 | 1966 | 1965 | 1964 | 1963 | 1962 | 1961 | 500 | 76 | 0

The Physical Nature of Centaur Asteroids; Rotation and Colors

Authors: Peixinho, N.; Ortiz, J. L.; Gutierrez, P. J.; Doressoundiram, A.; Roos-Serote, M.

Ref.: American Astronomical Society, DPS meeting #31, #15.02, Bulletin of the American Astronomical Society 31 (1999)

Abstract: Centaurs 1997 CU26 and 1995 DW2 have been observed in V and R from the 1.52-m telescope at Calar Alto (Spain) and from the 1.5-m telescope at Sierra Nevada (Spain) during April and May 1999. Light curves have been derived for a period of time spanning 29 days. We present the analysis of the light curves of these objects, determining the rotation period and the axial ratio. A preliminary rotation period of 18.53 hours is found for 1997 CU26, at a confidence greater than 70 %, and a peak to peak amplitude of 0.15 magnitudes. If confirmed, this would correspond an axial ratio of about 1.07.