{"paper":{"title":"Significantly high polarization degree of the very low-albedo asteroid (152679) 1998 KU$_\\mathrm{2}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Daisuke Kuroda, Fumihiko Usui, Hiroyuki Naito, Kiyoshi Kuramoto, Makoto Watanabe, Masataka Imai, Masateru Ishiguro, Mitsuteru Sato, Sunao Hasegawa, Tomohiko Sekiguchi","submitted_at":"2017-12-05T02:16:39Z","abstract_excerpt":"We present a unique and significant polarimetric result regarding the near-Earth asteroid (152679) 1998 KU$_\\mathrm{2}$ , which has a very low geometric albedo. From our observations, we find that the linear polarization degrees of 1998 KU$_\\mathrm{2}$ are 44.6 $\\pm$ 0.5\\% in the R$_\\mathrm{C}$ band and 44.0 $\\pm$ 0.6\\% in the V band at a solar phase angle of 81.0\\degr. These values are the highest of any known airless body in the solar system (i.e., high-polarization comets, asteroids, and planetary satellites) at similar phase angles. This polarimetric observation is not only the first for p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.01444","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}