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Physical Studies of Near-Earth Asteroids

Hahn, G. and Mottola, S. and Angelis, G. de (1) and Martino, M. di (2) (1994) Physical Studies of Near-Earth Asteroids. 54. Jahrestagung der Deutschen Physikalischen Gesellschaft, Münster, 9.3.1994.

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Abstract

A new, long-term project has been started at the Institute of Panetary Exploration of th DLR in Berlin-Adlershof which is aimed to derive physical properties of Near-Earth Asteroids(NEA). We plan to monitor many of these newly discovered bodeies as targets of opportunity, and gradually will build up a data base which will contain important information, valuable for both cosmogonic reasons and for future space missions to NEA. From time-resolved photometry we obtain lightcurves, which allow the determination of the rotation period, and are indicative of the asteroid shape. Lightcurves from different apparitions can be used to determine the orientation of the spin axis and sense of rotation. Using the CCD camera systems developed at our institute, attaached to various telescopes at La Silla (ESO), Chile, and Kvistaberg, Sweden, we obtained differential photometry of six NEA: (1981) Midas, (2062) Aten, (5653) WD5, 1980 AA, 1993 BX3 and 1993 MF. For some of the asteroids accurate astrometric positions have been determined, using the photometric CCD frames and HST Guide Star Catalogue as a reference star system. These data are important to improve the orbit and secure future recovery. Here we present results on the derived rotation periods and lightcurve amplitudes for all six NEA.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1994,
Title:Physical Studies of Near-Earth Asteroids
Authors:
AuthorsInstitution or Email of Authors
Hahn, G.UNSPECIFIED
Mottola, S.UNSPECIFIED
Angelis, G. de (1)UNSPECIFIED
Martino, M. di (2)UNSPECIFIED
Date:1994
Status:Published
Event Title:54. Jahrestagung der Deutschen Physikalischen Gesellschaft, Münster, 9.3.1994
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Institut für Planetenerkundung
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 09:47

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