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New Comet: C/2013 G3 (PANSTARRS)

14 Apr 2013, 16:10 UTC
New Comet: C/2013 G3 (PANSTARRS)
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Cbet nr. 3472, issued on 2013, April 04, announces the discovery of a new comet (discovery magnitude ~20.7) by PANSTARRS survey on CCD images obtained with the 1.8-m Pan-STARRS1 telescope on Haleakala on April 10.4. The new comet has been designated C/2013 G3 (PANSTARRS).We performed follow-up measurements of this object, while it was still on the neocp. Stacking of 11 R-filtered exposures, 50-sec each, obtained remotely on 2013, April 11.4 from E10 Faulkes Telescope South through a 2.0-m f/10.0 Ritchey-Chretien + CCD, shows that this object is slightly diffused.The FWHM of this object was measured about 20% wider than that of nearby field stars of similar brightness. Below you can see our image. Click on it for a bigger version.In the elaboration below you can see the difference between the comet (on the left) and a star of similiar brightness (on the right). The comet shows a slighly extended shape with respect to the star.Elaboration by Martino NicoliniM.P.E.C. 2013-G73 assigns the following preliminary elliptical orbital elements to comet C/2013 G3: T 2015 Jan. 9.21; e= 0.58; Peri. = 72.08; q = 4.33; Incl.= 55.27by Ernesto Guido & Nick Howes

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