Proceedings of the International Astronomical Union

Table of Contents - 2009 - Volume 5, Symposium S263 (Icy Bodies of the Solar System)  

Cambridge Journals Online - CUP Full-Text Page
Proceedings of the International Astronomical Union (2009), 5:218-222 Cambridge University Press
Copyright © International Astronomical Union 2010
doi:10.1017/S174392131000178X

Contributed Papers

Material properties of transition objects 3200 Phaethon and 2003 EH1

J. Borovičkaa1, P. Kotena1, P. Spurnýa1, D. Čapeka1, L. Shrbenýa1 and R. Štorka1

a1 Astronomical Institute of the Academy of Sciences, CZ-25165 Ondřejov, Czech Republic email: borovic@asu.cas.cz
Article author query
borovička j [ADS]  [Google Scholar]
koten p [ADS]  [Google Scholar]
spurný p [ADS]  [Google Scholar]
čapek d [ADS]  [Google Scholar]
shrbený l [ADS]  [Google Scholar]
štork r [ADS]  [Google Scholar]

Abstract

Asteroids 3200 Phaethon and 196256 (2003 EH1) are connected with two major meteoroid streams, Geminids and Quadrantids, respectively. We have modeled the observed light curves and decelerations of Geminid and Quadrantid meteors and studied their spectra. In both cases, we have found typical bulk densities of about 2600 kg m−3, much larger than in cometary meteoroids. Sodium was partially lost from Geminids and Quadrantids due to solar heating. The Quadrantid material was therefore not hidden deep inside the parent body 1500 years ago, when the perihelion was low enough for sodium loss to occur.

Keywordsmeteors; meteoroids; minor planets; asteroids