Main belt binary asteroidal systems with circular mutual orbits
Marchis, F. and Descamps, P. and Baek, M. and Harris, A.W. and Kaasalainen, M. and Berthier, J. and Hestroffer, D. and Vachier, F. (2008) Main belt binary asteroidal systems with circular mutual orbits. Icarus: International Journal of Solar System Studies, 196, pp. 97-118. Elsevier. DOI: 10.1016/j.icarus.2008.03.007.
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Official URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WGF-4S50K87-1&_user=100058&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=100058&md5=8cbc3a57226ce9452bb3d3b2de9e0d4a
In 2003, we initiated a long-term Adaptive Optics campaign to study the orbit of various main-belt asteroidal systems. Here we present a consistent solution for the mutual orbits of four binary systems: 22 Kalliope, 45 Eugenia, 107 Camilla and 762 Pulcova. With the exception of 45 Eugenia, we did not detect any additional satellites around these systems although we have the capability of detecting a loosely-bound fragment (located at 1/4×RHill) that is about 40 times smaller in diameter than the primary. The common characteristic of these mutual orbits is that they are roughly circular. Three of these binary systems belong to a C-“group” taxonomic class. Our estimates of their bulk densities are consistently lower (about 1 g/cm3) than their associated meteorite analogs, suggesting an interior porosity of 30–50% (taking CI-CO meteorites as analogs). 22 Kalliope, a W-type asteroid, has a significantly higher bulk density of about 3 g/cm3, derived based on IRAS radiometric size measurement. We compare the characteristics of these orbits in the light of tidal-effect evolution.
|Title:||Main belt binary asteroidal systems with circular mutual orbits|
|Date:||27 March 2008|
|Journal or Publication Title:||Icarus: International Journal of Solar System Studies|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 97-118|
|Keywords:||Asteroids, Adaptive optics, Orbit determination|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Asteroiden und Kometen (old)|
|Institutes and Institutions:||Institute of Planetary Research > Asteroids and Comets|
|Deposited By:||Prof. Alan Harris|
|Deposited On:||18 Aug 2008|
|Last Modified:||27 Apr 2009 15:10|
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