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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) and Neukum, G. (1994) Physical Studies of Near-Earth Asteroids. 54. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 9.3.94, Münster.

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Abstract

A new, long-term project has been started at the Institute of Planetary Exploration of the DLR in Berlin-Adlershof which is aimed to derive physical properties of Near-Earth asteroids (NEA). Weplan to monitor many of these newly discovered bodies 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 light curves, 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, attached to various telescopes at La Silla (ESO), Chile, and Kvistaberg, Sweden, we obtained differential photometry of six NEA: (1981) Midas, (2062) Aten, (5653) 1992 WD5, 1980 AA, 1993 BX3 and 1993 MF. For some of theasteroids accurate astrometric positions have been determined, using the photometric CCD frames and the 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
Neukum, G.UNSPECIFIED
Date:1994
Status:Published
Event Title:54. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 9.3.94, Münster
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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