Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...724l.118s&link_type=abstract
The Astrophysical Journal Letters, Volume 724, Issue 1, pp. L118-L121 (2010).
Astronomy and Astrophysics
Astronomy
Comets: Individual: 217P&Sollinear, Methods: Observational
Scientific paper
We present optical images of 217P/LINEAR taken with the Kiso 105 cm Schmidt Telescope. The images revealed a day-by-day variation of the 217P/LINEAR shape, indicating an outburst occurred. Since our observation started before the outburst event, we examined the morphological evolution of the expanding dust cloud produced by the outburst. It was found that the dust cloud expanded at a velocity of 120-140 m s-1 and that the comet became brighter by 1.7-2.3 mag. Using the observational result, we estimated that the onset time was 2009 October 13.4 and that the total mass released by the outburst was in the range of 106-109 kg. No fragments or split nuclei brighter than 18.5 mag (1.1 km in radius) were confirmed in our observations. Compared with other outbursts, we concluded that it was a relatively small event for an outburst.
Ishiguro Masateru
Sarugaku Yuki
Ueno Maki
Usui Fumihiko
Watanabe Jun'ichi
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