Data Set Overview : The dataset includes available data on imaging polarimetry of the Centaurs 2060 Chiron, 5154 Pholus, and 10199 Chariklo, TNOs 20000 Varuna, 26375 (1999 DE9), 28978 Ixion, 29981 (1999 TD10), 50000 Quaoar, 136472 Makemake, 90482 Orcus and the dwarf planet 136199 Eris obtained with the VLT and published by Boehnhardt et al. (2004), Rousselot et al. (2005), Bagnulo et al. (2006, 2008), and Belskaya et al. (2008, 2010, 2012). The results of polarimetric observations of the Pluto-Charon system were also included. Pluto's polarimetric observations were made in 1972-1988 and published by Kelsey and Fix (1973), Breger and Cochran (1982) and Avramchuk et al. (1992).  Modification History :  This data set was first archived in 2009 with polarimetric results from seven publications. Version 2.0 of the data set, with additional data from Bagnulo et al. (2008) and Belskaya et al. (2010), was archived in 2011. Version 3.0, with data added from Belskaya et al. (2012), was archived in 2013.  References :  Boehnhardt H., Bagnulo S., Muinonen K., Barucci M.A., Kolokolova L., Dotto E., Tozzi G.P. 2004. Surface characterization of 28978 Ixion (2001 KX76). Astron. Astrophys. 415, L21-25.  Rousselot P., Levasseur-Regourd, A.C., Muinonen K., Petit J.-M. 2005. Polarimetric and Photometric Phase Effects Observed on Transneptunian Object (29981) 1999 TD10. Earth, Moon and Planets, v. 97, No. 3-4, p. 353-364.  Bagnulo S., Boehnhardt H., Muinonen K., Kolokolova L., Belskaya I., Barucci M.A. 2006. Exploring the surface properties of transneptunian objects and Centaurs with polarimetric FORS1/VLT observations. Astron. Astroph., v. 450, No. 3, p. 1239-1248.  Belskaya I., Bagnulo S., Muinonen K., Barucci M.A., Tozzi G.P., Fornasier S., Kolokolova L. 2008. Polarimetry of the dwarf planet (136199) Eris. Astron. Astroph., v. 479, No. 1, p. 265-269.  Belskaya I.N., Bagnulo S., Stinson A., Tozzi G.P., Muinonen, K., Shkuratov Yu.G., Barucci M.A., Fornasier S. Polarimetry of trans-Neptunian objects (136472) Makemake and (90482) Orcus. Astron. Astroph., v. 547, id.A101, 5 pp., 2012.  Kelsey J.D., Fix L.A. 1973. Polarimetry of Pluto. Astrophys. J., v. 184, p. 633-636.  Breger M., Cochran W.D. 1982. Polarimetry of Pluto. Icarus, v. 49, p. 120-124.  Avramchuk V.V., Rakhimov V.Iu., Chernova G.P., Shavlovskii V.I. 1992. Photometry and polarimetry of Pluto near its perihelion. Kinemat. Phys. Neb. Tel, v. 8, No. 4, p. 37-45 (Russian).  Bagnulo S., Belskaya I., Muinonen K., Tozzi G.P., Barucci M.A., Kolokolova L., Fornasier S. Discovery of two distinct polarimetric behaviours of trans-Neptunian objects. Astron. Astrophys 491, L33-L36, 2008.  Belskaya, I.N., Bagnulo, S., Barucci, M.A., Muinonen, K., Tozzi, G.P., Fornasier, S., Kolokolova, L. Polarimetry of Centaurs (2060) Chiron, (5145) Pholus and (10199) Chariklo. Icarus, 210, 472-479, 2010.

Confidence Level Overview : This data set is intended to represent a complete survey of the literature of TNO and Centaur polarimetry. Details of the confidence level of the individual measurements can be found in the published papers referenced for each entry.  Observations of 29981 (1999 TD10) were published by Rousselot et al. (2005) as the mean of two consecutive nights.