Physical study of the asteroid 243 Ida, second fly-by target of the Galileo spacecraft.
Gonano-Beurer, M. and Di Martino, M.(1) and Mottola, S. and Neukum, G. (1992) Physical study of the asteroid 243 Ida, second fly-by target of the Galileo spacecraft. Astronomy and Astrophysics 254 (1992) pp. 393-396, 254, pp. 393-396.
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According to the present mission planning, 243 Ida will be the secondmain belt asteroid to be encountered by the Galileo spacecraft, the fly-by being scheduled for August, 1993. In the framework of our observation program of space mission targets, we have undertaken CCD and photoelectric measurements of 243 Ida in the B and V Johnson bands from the observatories of Loiano (Italy) and ESO (La Silla, Chile) at the time of its 1990 apparition. From seven observations which spanned a period of three month in timeand a phase angle range from about 4 to 20 degrees, we obtain three composite lightcurves of this asteroid. The good quality of these datas allows a substantial improvement in the determination of the synodic rotational period of 243 Ida, which results to be Psyn= 4.6330+-0.0005 hr. We derive for the first time the magnitude-phase relationship and an estimation for the amplitude-phase relationship (APR) of this asteroid. The computation of the parametersof the Bowell-Harris-Lumme relation from our measurements gives: H៞.042+-0.008 mag and Gɢ.15+-0.02 mag deg-1. From the lightcurve amplitude-phase relation we estimate s (APR)ɢ.010 mag deg-1 and mɢ.016 deg-1. We also derive the color index B-Vɢ.87+-0.03.
|Title:||Physical study of the asteroid 243 Ida, second fly-by target of the Galileo spacecraft.|
|Journal or Publication Title:||Astronomy and Astrophysics 254 (1992) pp. 393-396|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 393-396|
|Keywords:||asteroids; photometry; planets and satellites: individual; 243 Ida|
|HGF - Research field:||UNSPECIFIED|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||UNSPECIFIED|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institut für Optoelektronik|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||02 Apr 2006|
|Last Modified:||27 Apr 2009 09:34|
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