{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7ZEPGXGE2GLJAH3424WFR33Q6E","short_pith_number":"pith:7ZEPGXGE","canonical_record":{"source":{"id":"1709.01603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-05T21:48:35Z","cross_cats_sorted":[],"title_canon_sha256":"43fd7b3d64752c448146fc3032d244b197de308c642ff0481866d18ba2596326","abstract_canon_sha256":"126c69df2a3b90110a4b27f1a0c26402dd93049b56ff907caa334e4ffdbec662"},"schema_version":"1.0"},"canonical_sha256":"fe48f35cc4d196901f7cd72c58ef70f133fbad5ee8e133a0df17ce687800d9d3","source":{"kind":"arxiv","id":"1709.01603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01603","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01603v1","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01603","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"pith_short_12","alias_value":"7ZEPGXGE2GLJ","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7ZEPGXGE2GLJAH34","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7ZEPGXGE","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7ZEPGXGE2GLJAH3424WFR33Q6E","target":"record","payload":{"canonical_record":{"source":{"id":"1709.01603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-05T21:48:35Z","cross_cats_sorted":[],"title_canon_sha256":"43fd7b3d64752c448146fc3032d244b197de308c642ff0481866d18ba2596326","abstract_canon_sha256":"126c69df2a3b90110a4b27f1a0c26402dd93049b56ff907caa334e4ffdbec662"},"schema_version":"1.0"},"canonical_sha256":"fe48f35cc4d196901f7cd72c58ef70f133fbad5ee8e133a0df17ce687800d9d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:39.081030Z","signature_b64":"XELHJh1tcSnY/4cRnIwFi5lNjzQK8Sa6tiaXsp6fSFQWNGja/BXqwt9a8Ki4ttfvizAg2W72QNBEZcQUlcTYBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe48f35cc4d196901f7cd72c58ef70f133fbad5ee8e133a0df17ce687800d9d3","last_reissued_at":"2026-05-18T00:32:39.080355Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:39.080355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.01603","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:32:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rv0h7KVwDp6Yz4QEph/XlcdAleAmt09pC+wLSPy2VdqtNbMI+hyiTingyWSODPOLs0OQ5qSxE2EbsiBRsBexBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:48:01.783795Z"},"content_sha256":"4668b4c50635b197d26073ee8f8742552c30c6364fd0dfbc2f1409ffcaf13011","schema_version":"1.0","event_id":"sha256:4668b4c50635b197d26073ee8f8742552c30c6364fd0dfbc2f1409ffcaf13011"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7ZEPGXGE2GLJAH3424WFR33Q6E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarimetric Study of Near-Earth Asteroid (1566) Icarus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Daisuke Kuroda, Fumihiko Usui, Hidekazu Hanayama, Hiroyuki Naito, Jooyeon Kim, Katsuhito Ohtsuka, Kiyoshi Kuramoto, Makoto Watanabe, Masataka Imai, Masateru Ishiguro, Mingyeong Lee, Mitsuteru Sato, Seitaro Urakawa, Sunao Hasegawa, Tomohiko Sekiguchi, Yoonsoo P. Bach","submitted_at":"2017-09-05T21:48:35Z","abstract_excerpt":"We conducted a polarimetric observation of the fast-rotating near-Earth asteroid (1566) Icarus at large phase (Sun-asteroid-observer's) angles $\\alpha$= 57 deg--141deg around the 2015 summer solstice. We found that the maximum values of the linear polarization degree are $P_\\mathrm{max}$=7.32$\\pm$0.25 % at phase angles of $\\alpha_\\mathrm{max}$=124$\\pm$8 deg in the $V$-band and $P_\\mathrm{max}$=7.04$\\pm$0.21 % at $\\alpha_\\mathrm{max}$=124$\\pm$6 deg in the $R_\\mathrm{C}$-band. Applying the polarimetric slope-albedo empirical law, we derived a geometric albedo of $p_\\mathrm{V}$=0.25$\\pm$0.02, whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01603","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:32:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FWmLt5aBO0QDhZyoR/1Brn+k+gm7BNb/ndqtOUY+iXROwz5cDGxsqIx8TOmHTGobkNEWiVdMaVzgy/r+Jmu/Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:48:01.784163Z"},"content_sha256":"3d7c5289cd1bf6ea9d5e453eb9bfb9f949be559ee1759108279c55c156193337","schema_version":"1.0","event_id":"sha256:3d7c5289cd1bf6ea9d5e453eb9bfb9f949be559ee1759108279c55c156193337"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/bundle.json","state_url":"https://pith.science/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-08T14:48:01Z","links":{"resolver":"https://pith.science/pith/7ZEPGXGE2GLJAH3424WFR33Q6E","bundle":"https://pith.science/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/bundle.json","state":"https://pith.science/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ZEPGXGE2GLJAH3424WFR33Q6E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7ZEPGXGE2GLJAH3424WFR33Q6E","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"126c69df2a3b90110a4b27f1a0c26402dd93049b56ff907caa334e4ffdbec662","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-05T21:48:35Z","title_canon_sha256":"43fd7b3d64752c448146fc3032d244b197de308c642ff0481866d18ba2596326"},"schema_version":"1.0","source":{"id":"1709.01603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01603","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01603v1","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01603","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"pith_short_12","alias_value":"7ZEPGXGE2GLJ","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7ZEPGXGE2GLJAH34","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7ZEPGXGE","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:3d7c5289cd1bf6ea9d5e453eb9bfb9f949be559ee1759108279c55c156193337","target":"graph","created_at":"2026-05-18T00:32:39Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We conducted a polarimetric observation of the fast-rotating near-Earth asteroid (1566) Icarus at large phase (Sun-asteroid-observer's) angles $\\alpha$= 57 deg--141deg around the 2015 summer solstice. We found that the maximum values of the linear polarization degree are $P_\\mathrm{max}$=7.32$\\pm$0.25 % at phase angles of $\\alpha_\\mathrm{max}$=124$\\pm$8 deg in the $V$-band and $P_\\mathrm{max}$=7.04$\\pm$0.21 % at $\\alpha_\\mathrm{max}$=124$\\pm$6 deg in the $R_\\mathrm{C}$-band. Applying the polarimetric slope-albedo empirical law, we derived a geometric albedo of $p_\\mathrm{V}$=0.25$\\pm$0.02, whi","authors_text":"Daisuke Kuroda, Fumihiko Usui, Hidekazu Hanayama, Hiroyuki Naito, Jooyeon Kim, Katsuhito Ohtsuka, Kiyoshi Kuramoto, Makoto Watanabe, Masataka Imai, Masateru Ishiguro, Mingyeong Lee, Mitsuteru Sato, Seitaro Urakawa, Sunao Hasegawa, Tomohiko Sekiguchi, Yoonsoo P. Bach","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-05T21:48:35Z","title":"Polarimetric Study of Near-Earth Asteroid (1566) Icarus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01603","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4668b4c50635b197d26073ee8f8742552c30c6364fd0dfbc2f1409ffcaf13011","target":"record","created_at":"2026-05-18T00:32:39Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"126c69df2a3b90110a4b27f1a0c26402dd93049b56ff907caa334e4ffdbec662","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-05T21:48:35Z","title_canon_sha256":"43fd7b3d64752c448146fc3032d244b197de308c642ff0481866d18ba2596326"},"schema_version":"1.0","source":{"id":"1709.01603","kind":"arxiv","version":1}},"canonical_sha256":"fe48f35cc4d196901f7cd72c58ef70f133fbad5ee8e133a0df17ce687800d9d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe48f35cc4d196901f7cd72c58ef70f133fbad5ee8e133a0df17ce687800d9d3","first_computed_at":"2026-05-18T00:32:39.080355Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:39.080355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XELHJh1tcSnY/4cRnIwFi5lNjzQK8Sa6tiaXsp6fSFQWNGja/BXqwt9a8Ki4ttfvizAg2W72QNBEZcQUlcTYBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:39.081030Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.01603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4668b4c50635b197d26073ee8f8742552c30c6364fd0dfbc2f1409ffcaf13011","sha256:3d7c5289cd1bf6ea9d5e453eb9bfb9f949be559ee1759108279c55c156193337"],"state_sha256":"18247265e2735632ef389bc88b02444595d5d91fc46eb038ab91cbb32e5b725d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WsOihUYGxxLPJoZjGK+MaPKOcMMVAVX/phwO+SQUBEtDfBTkX4I7AksbabAonlAK/lOtuEEZGE88UBIEuIR4BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T14:48:01.785995Z","bundle_sha256":"81940e108c48fa57db8dfb27f2bd196b5d5376087f4d4cde950e05719203a84e"}}