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
Visible-IR colors and lightcurve analysis of two bright TNOs: 1999 TC36 and 1998 SN165
Authors: Peixinho, N.; Doressoundiram, A.; Romon-Martin, J.
Ref.: New Astronomy 7, 359-367 (2002)
Abstract: We report on observations of two bright Trans-Neptunian Objects (TNOs)-1999 TC36 and 1998 SN165-during two observational campaigns, as part of the Meudon Multicolor Survey of Outer Solar System Objects. /V-J color was measured for 1999 TC36 (/V-J=2.34+/-0.18), which combined with previous measured colors in the visible, indicate a red reflectivity spectrum at all wavelengths. Photometric V-band lightcurves were taken for both objects over a time span of around 8 h. We have determined a possible rotational period of /P=10.1+/-0.8 h for 1998 SN165, making it the seventh TNO with an estimated period. >From its lightcurve variation of Δm=0.151-0.030+0.022, we have inferred an asymmetry ratio of a/b>=1.148-0.031+0.024. For 1999 TC36, we did not detect any rotational period or periodic signal variation within the uncertainties, but the analysis of its lightcurve hints to a slight systematic magnitude decrease.
