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The puzzling case of asteroid 8 Flora solvedThis paper reports the results obtained in an international campaign devoted to the observations of the asteroid 8 Flora, a possible target of the Vesta mission. Using the lightcurves obtained during three oppositions (1980, 1983, 1984), a synodic rotational period of 12.87 hours was determined. This period, applied to the lightcurves of 8 Flora already published, satisfactorily explains these observations. Applying the AM-method described by Zappala et al. (1983), the pole position was calculated. The slope parameter G, determined during the 1969 and 1983 apparitions, differs by about 0.10. Considering that in those years the ecliptic longitudes of the asteroid were about 115 degrees apart, this fact probably indicates the presence of variations in the structure and chemical compositions of the surface.
Document ID
19900029420
Document Type
Reprint (Version printed in journal)
Authors
Di Martino, M. (Osservatorio Astronomico Turin, Italy)
Zappala, V. (Osservatorio Astronomico Turin, Italy)
Cellino, A. (Torino Osservatorio Astronomico, Turin, Italy)
Barucci, M. A. (Paris Observatoire, Meudon, France)
Harris, A. W. (Osservatorio Astronomico Turin, Italy)
Young, J. W. (JPL Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1989
Publication Information
Publication: Astronomy and Astrophysics
Volume: 223
Issue: 1-2,
ISSN: 0004-6361
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other