228P

@ARTICLE{asteriks,
               author = {{Hedges}, C. and Co},
                title = "{}",
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            archivePrefix = "arXiv",
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@MISC{2016ktwo.propGO12033,
	author = {{Golden}, G.},
	title = {Serendipitous Observations of Short Period Comets by K2},
	abstract = {Despite the detection and orbital characterization of several hu
		ndred short period comets to date, only a very small number have
		 had their rotational properties fully determined. This is princ
		ipally a consequence of their intrinsic faintness for the majori
		ty of their orbits, and the acute difficulty in securing long ba
		seline and consistently accurate observations on the largest of 
		ground based optical/IR telescopes to sufficiently sample ~ 4 to
		 40 hour periods (the approximate range of the currently known s
		ample for which rotational data exists). The K2 mission however 
		offers an ideal platform to study any sufficiently bright short 
		period comets that serendipitously pass through each of the plan
		ned Cycle 4 Campaign fields - K2's unparalleled photometric sens
		itivity combined with its ~ 70 day observational baseline repres
		ents a unique observational opportunity to study these mysteriou
		s and compelling objects. Using both the K2ephem tool and JPL's 
		HORIZON facility, we identified 15 short period comets that pass
		 within the campaign fields with predicted magnitudes < 22 - 
		13 are Jupiter Family Comets (JFC), one is a Main Belt Comet (MB
		C) and one is a Centaur. Of the 11 located > 3 AU (including 
		the MBC/`active asteroid' 176P/LINEAR), K2's  precision photomet
		ry will allow us to accurately characterize their nucleus rotati
		on periods. For the remaining 4 comets within 3 AU that are expe
		cted to be active, full coverage of their passage across K2's fi
		eld of view will yield a unique temporal profile of nucleus acti
		vity, in addition to a rotational period. These data will be imm
		ediately pertinent to our understanding of cometary nucleus dens
		ity and structure (of great relevance in the assessment of viabl
		e NEO mitigation strategies), the relationship between rotation 
		& activity, links between JFCs and Kuiper Belt Objects and t
		heir formation, and complement extensive campaigns to date to st
		udy size, albedo and color properties. Furthermore, accurate spi
		n state data could be used in the selection and subsequent plann
		ing of any future NASA missions to these 'time capsules' of the 
		early solar system.}
	howpublished = {K2 Proposal},
	year = {2016},
	month = {Februrary},
	url = {https://keplerscience.arc.nasa.gov/data/k2-programs/GO12033.txt},
	notes = {K2 Proposal GO12033}
}

                    Acknowledgement:
                    This work uses...