{"paper":{"title":"Shape and Rotational Motion Models for Tumbling and Monolithic Asteroid 2012 $\\mathrm{TC_4}$:High Time Resolution Lightcurve with the Tomo-e Gozen Camera","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Fumitake Watanabe, Hiroyuki Naito, Jun Takahashi, Kazuyoshi Imamura, Makoto Yoshikawa, Masateru Ishiguro, Ryoma Nagayoshi, Ryo Okazaki, Ryou Ohsawa, Seitaro Urakawa, Shigeyuki Sako, Shin-ichiro Okumura, Tatsuhiro Michikami, Tomohiko Sekiguchi, Yasuhiko Murakami, Yuri Sakurai","submitted_at":"2019-03-13T19:08:33Z","abstract_excerpt":"We present visible and near-infrared observations of a near-Earth object (NEO), 2012 $\\mathrm{TC_4}$. The NEO 2012 $\\mathrm{TC_4}$ approached close to the Earth at a distance of about 50,000 km in October 2017. This close approach provided a practical exercise for planetary defense. This apparition was also an appropriate opportunity to investigate 2012 $\\mathrm{TC_4}$, which is a monolithic asteroid \\citep{Polishook13}. We conducted the observation campaign of 2012 $\\mathrm{TC_4}$ using six small- and medium-sized telescopes. The multiband photometry analysis showed that the taxonomic class o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.05687","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"}