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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&#61 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&#6110.042+-0.008 mag and G&#610.15+-0.02 mag deg-1. From the lightcurve amplitude-phase relation we estimate s (APR)&#610.010 mag deg-1 and m&#610.016 deg-1. We also derive the color index B-V&#610.87+-0.03.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1992,
Title:Physical study of the asteroid 243 Ida, second fly-by target of the Galileo spacecraft.
AuthorsInstitution or Email of Authors
Gonano-Beurer, M.UNSPECIFIED
Di Martino, M.(1)UNSPECIFIED
Journal or Publication Title:Astronomy and Astrophysics 254 (1992) pp. 393-396
Refereed publication:Yes
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
Location: Oberpfaffenhofen
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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