{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VSNZ2IQBPLG4VVDL4BXJLINLR7","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":"ff2add1c5a316fba49872022b39ae90a77521f5e3f6897422c375cee4ef4116f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-02T22:09:57Z","title_canon_sha256":"4dca5ce8e3a770ad4cd13bf03cec7918cb5d4a624df0fabdba6a2b873703e920"},"schema_version":"1.0","source":{"id":"1305.0587","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.0587","created_at":"2026-05-18T01:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1305.0587v1","created_at":"2026-05-18T01:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.0587","created_at":"2026-05-18T01:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"VSNZ2IQBPLG4","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VSNZ2IQBPLG4VVDL","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VSNZ2IQB","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:fb0adaebe55ec10155ea4cb1324fcf0809766f0f4146796ac127802ed94b794f","target":"graph","created_at":"2026-05-18T01:50:12Z","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":"The Procyon AB binary system (orbital period 40.838 years, a newly-refined determination), is near and bright enough that the component radii, effective temperatures, and luminosities are very well determined, although more than one possible solution to the masses has limited the claimed accuracy. Preliminary mass determinations for each component are available from HST imaging, supported by ground-based astrometry and an excellent Hipparcos parallax; we use these for our preferred solution for the binary system. Other values for the masses are also considered. We have employed the TYCHO stell","authors_text":"David Arnett, Gilles Fontaine, James Liebert, Kurtis A. Williams, Patrick A. Young","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-02T22:09:57Z","title":"The Age and Stellar Parameters of the Procyon Binary System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.0587","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":"sha256:443fcbdb8a292ae6c1f0480966eb093b1f275f2c10355b610f380308ae13328e","target":"record","created_at":"2026-05-18T01:50:12Z","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":"ff2add1c5a316fba49872022b39ae90a77521f5e3f6897422c375cee4ef4116f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-02T22:09:57Z","title_canon_sha256":"4dca5ce8e3a770ad4cd13bf03cec7918cb5d4a624df0fabdba6a2b873703e920"},"schema_version":"1.0","source":{"id":"1305.0587","kind":"arxiv","version":1}},"canonical_sha256":"ac9b9d22017acdcad46be06e95a1ab8fc41b8a9283656e83a60842473263f2f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac9b9d22017acdcad46be06e95a1ab8fc41b8a9283656e83a60842473263f2f4","first_computed_at":"2026-05-18T01:50:12.970262Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:12.970262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iepDLDBI/DNMl6nelF+sio7kLzFUYz6DIS1SQ1Ax4G93ijdXoTSG4yfvQKZNO6nUUlKW+roVk/eCItgdaCrACw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:12.970908Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.0587","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:443fcbdb8a292ae6c1f0480966eb093b1f275f2c10355b610f380308ae13328e","sha256:fb0adaebe55ec10155ea4cb1324fcf0809766f0f4146796ac127802ed94b794f"],"state_sha256":"e813bbf33e1885c819fa864894ac849e5c21322ad1b8683349d1cee33c91998b"}