Follow-up observations of Comet 17P/Holmes after its extreme outburst in brightness end of October 2007

Details Follow-up observations of Comet 17P/Holmes after its extreme outburst in brightness end of October 2007 Follow-up observations of Comet 17P/Holmes after its extreme outburst in brightness end of October 2007

2009-03-25

arxiv.org/abs/0903.4442v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

AN accepted, 6 pages, 4 figures, 5 table

Scientific paper

We present follow-up observations of comet 17/P Holmes after its extreme outburst in brightness, which occurred end of October 2007. We obtained 58 V-band images of the comet between October 2007 and February 2008, using the Cassegrain-Teleskop-Kamera (CTK) at the University Observatory Jena. We present precise astrometry of the comet, which yields its most recent Keplerian orbital elements. Furthermore, we show that the comet's coma expands quite linearly with a velocity of about 1650km/s between October and December 2007. The photometric monitoring of comet 17/P Holmes shows that its photometric activity level decreased by about 5.9mag within 105 days after its outburst.

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