{"paper":{"title":"The Opposition Effect of the Asteroid 4 Vesta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Akito Sogame, Daisuke Kuroda, Fumi Yoshida, Mansur A. Ibrahimov, Masanao Abe, Masateru Ishiguro, Noritaka Tokimasa, Seidai Miyasaka, Shinobu Ozaki, Sunao Hasegawa","submitted_at":"2014-06-18T23:26:17Z","abstract_excerpt":"We present the results of photometric observations carried out with four small telescopes of the asteroid 4 Vesta in the $B$, $R_{\\rm C}$, and $z'$ bands at a minimum phase angle of 0.1 $\\timeform{D}$. The magnitudes, reduced to unit distance and zero phase angle, were $M_{B}(1, 1, 0) = 3.83 \\pm 0.01, M_{R_{\\rm C}}(1, 1, 0) = 2.67 \\pm 0.01$, and $M_{z'}(1, 1, 0) = 3.03 \\pm 0.01$ mag. The absolute magnitude obtained from the IAU $H$--$G$ function is $\\sim$0.1 mag darker than the magnitude at a phase angle of 0$\\timeform{D}$ determined from the Shevchenko function and Hapke models with the coher"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.4913","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"}