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New Comet C/2018 Y1 (Iwamoto)

20 Dec 2018, 20:19 UTC
New Comet C/2018 Y1 (Iwamoto)
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CBET 4588 & MPEC 2018-Y52, issued on 2018, Dec. 20, announce the discovery of a comet (magnitude ~12) by M. Iwamoto (MPC code 872) in images taken on 2018 Dec 18.8. The new comet has been designated C/2018 Y1 (Iwamoto). I performed follow-up measurements of this object, while it was still on the PCCP webpage. Stacking of 5 unfiltered exposures, 20 seconds each, obtained remotely on 2018, December 20.5 from H06 (T20 - iTelescope network) through a 0.1-m f/5.0 astrograph + CCD, shows that this object is a comet with a diffuse coma about 1.5 arcmin in diameter and sharp central condensation.My confirmation image (click on it for a bigger version)MPEC 2018-Y52 assigns the following preliminary parabolic orbital elements to comet C/2018 Y1: T 2019 Jan. 27.16; e= 1.0; Peri. = 354.05; q = 1.14; Incl.= 160.69Below you can see a graph generated using the software Orbitas and showing the predicted magnitude (in red) versus the maximum height (for Northern Hemisphere). (click on the image for a bigger version). Preliminar orbit has the comet 0.2 AU from Earth with a peak magnitude of about 6 at the beginning of February 2019! (as always with comets, the future magnitudes reported here ...

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