2002 VS130

@ARTICLE{asteriks,
               author = {{Hedges}, C. and Co},
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@MISC{2016ktwo.propGO13114,
	author = {{Pal}, P. and {Szabo}, S. and {Mueller}, M. and {Kiss}, K. and {Kiss}, K.},
	title = {K2 photometry of a large sample of trans-Neptunian objects},
	abstract = {Our recent studies (Pal et al. 2015, 2016, Kiss et al 2016) have
		 demonstrated that the K2 mission is an excellent opportunity to
		 obtain rotational properties of trans-Neptunian objects (TNOs).
		 Using long-cadence Kepler photometry focusing on the stationary
		 points of the apparent tracks of these objects, light curves wi
		th excellent quality can be obtained, from which one can constra
		in the rotation period, surface inhomogeneities, the shape of th
		e object and decide, whether the true rotation period correspond
		s to a single-peaked or double-peaked solution.We propose to obs
		erve 13+9+9 Centaurs and trans-Neptunian objects throughout the 
		Campaigns 11, 12 and 13, respectively, of the K2 programme. From
		 our list of proposed targets, 8 also have been observed in the 
		framework of the ``TNOs are Cool!'' open-time key programme of t
		he Herschel Space Observatory (Muller et al. 2009), therefore an
		 unambiguous rotational characteristics can be combined with an 
		unambiguous diameter and surface albedo for these objects. This 
		sample of ours covers various dynamical types of the population 
		of objects outside the main asteroid belt, including 5 Centaurs,
		 13 classical objects, 4 scattered disk objects and 9 resonant o
		bjects. One of the resonant objects has 1:1 mean-motion resonanc
		e with Neptune (namely 2012 VU85, a Trojan of Neptune) as well a
		s there are four Plutinos, i.e. objects in 2:3 mean-motion reson
		ance with Neptune.None of targets having Herschel/PACS thermal p
		hotometry have a currently known accurate rotation period (note:
		 2005 TB190 has ground-based observations confirming variability
		 but with several aliases, see also Thirouin et al. 2012). Hence
		, the K2 time series also aids the proper interpretation of ther
		mal emission measurements. All of the targets having Herschel ph
		otometry fall on silicon for quite long time (60+ days) with the
		 exception of Borasisi. This object is a binary system with a pe
		riod of 46.3 days (Noll et al. 2004). Hence, the total time of 1
		3+10 days when K2 is capable to perform photometry would not cov
		er the binary period, however, even this shorter track could con
		firm or constrain whether the objects have a synchronous rotatio
		n or not.Due to the number of these targets and the comparativel
		y large pixel cost w.r.t the stellar sources, we prioritize our 
		targets according to their brightness (i.e. the effective S/N ra
		tio of the rotational light curve) as well as the existence of t
		hermal infrared data. Our top priority objects include all of th
		e objects having Herschel/PACS photometry. We also indicated 201
		2 VU85 with priority 1. Priority 2 objects are either bright or 
		have interesting dynamical properties. We note that even the fai
		ntest (priority 3) objects have comparable brightness to that of
		 2002 GV31. This object was also successfully observed by K2, yi
		elding a folded light curve with good signal-to-noise ratio and 
		an unambiguous rotation period (Pal et al. 2015). We also note t
		hat the first minor body discovered in the outer Solar System, (
		2060) Chiron fell on silicon during Campaign 12. Due to the diff
		erent nature of K2 data acquisition, the science case of (2060) 
		Chiron is described in a separate proposal.Proposed targets:}
	howpublished = {K2 Proposal},
	year = {2016},
	month = {Februrary},
	url = {https://keplerscience.arc.nasa.gov/data/k2-programs/GO13114.txt},
	notes = {K2 Proposal GO13114}
}

                    Acknowledgement:
                    This work uses...