Main Belt Comet P/2008 R1 Garradd: changes of activity

Details Main Belt Comet P/2008 R1 Garradd: changes of activity Main Belt Comet P/2008 R1 Garradd: changes of activity

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf...17k&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.17

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Scientific paper

In this work we investigated long term changes of the water emission from a model comet of the size and orbital elements of comet P/2008 R1 (Garradd). We performed simulations for model cometary nuclei of different compositions and two different orientations in space. Our simulations indicate, that the decrease of water production from one orbital period to another one may be slow. The seasonal maximum of water production 500 orbital periods after activation of the comet can be as 7x1024 molecules per second. The upper estimate for the production of water derived from observations of P/2008 R1 (Garradd) by [1] is 5x1025. Hence, it is possible, that comet Garradd was activated not recently, but few hundreds orbital periods ago.

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