{"paper":{"title":"Optical Properties of (162173) 1999 JU3: In Preparation for the JAXA Hayabusa 2 Sample Return Mission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Akihiko Fukui, Akira Arai, Arne Rau, Daisuke Kuroda, David J. Osip, Dhanraj S. Warjurkar, Fabian Knust, Fumihiko Usui, Fumio Abe, Henry H. Hsieh, Hidekazu Hanayama, Joanna E. Thomas-Osip, Jochen Greiner, Jun Takahashi, Kang-Sian Pan, Kei Furusawa, Kohei Wada, Makoto Yoshikawa, Masanao Abe, Masateru Ishiguro, Myung-Jin Kim, Nicholas Moskovitz, Noritaka Tokimasa, Patricia Schady, Paul J. Tristram, Seitaro Urakawa, Shinsuke Abe, Sunao Hasegawa, Takahiro Nagayama, Takahiro Sumi, Thomas G. Mueller, Tomohiko Sekiguchi, Young-Jun Choi, Yuhei Takagi","submitted_at":"2014-07-21T16:56:11Z","abstract_excerpt":"We investigated the magnitude-phase relation of (162173) 1999 JU3, a target asteroid for the JAXA Hayabusa 2 sample return mission. We initially employed the international Astronomical Union's H-G formalism but found that it fits less well using a single set of parameters. To improve the inadequate fit, we employed two photometric functions, the Shevchenko and Hapke functions. With the Shevchenko function, we found that the magnitude-phase relation exhibits linear behavior in a wide phase angle range (alpha = 5-75 deg) and shows weak nonlinear opposition brightening at alpha< 5 deg, providing "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5569","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"}