{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KBLZX3MUIZDK74WS2EZQXSFSD4","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":"250d9aa99141a2734f1029e00f790e73eba0a401fcd352814f818e3339452111","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-04T22:34:22Z","title_canon_sha256":"fb0a0115b77d420d1801333e07a126d4140c6bfcb9868f6319bc0ca130d6df27"},"schema_version":"1.0","source":{"id":"1212.0897","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.0897","created_at":"2026-05-18T03:39:07Z"},{"alias_kind":"arxiv_version","alias_value":"1212.0897v1","created_at":"2026-05-18T03:39:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.0897","created_at":"2026-05-18T03:39:07Z"},{"alias_kind":"pith_short_12","alias_value":"KBLZX3MUIZDK","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KBLZX3MUIZDK74WS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KBLZX3MU","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:d98ebc00921bd529c30e7f451f5b3571216e17147ed4b9d2e759e83a5fb6c702","target":"graph","created_at":"2026-05-18T03:39:07Z","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 Blazhko effect in V1820 Orionis and its period were reported for the first time by Wils et al. (2006) from a data analysis of the Northern Sky Variability Survey. The results of additional V1820 Orionis observations over a time span of 4 years are presented herein. From the observed light curves, 73 pulsation maxima have been measured. The times of light maxima have been compared to ephemerides to obtain the (O-C) values. The Blazhko period (27.917 +/- 0.002 d) has been derived from light curve Fourier analysis and from ANOVA analyses of the (O-C) values and of magnitudes at maximum light ","authors_text":"Franz-Josef Hambsch, Kenneth Menzies, Patrick Wils, Pierre de Ponthiere, Tom Krajci","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-04T22:34:22Z","title":"V1820 Orionis : an RR Lyrae star with strong and irregular Blazhko effect"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.0897","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:b8bee9ab751b0f37d2867753f13294a410246f7275c31cb97cd9c8e1433226a8","target":"record","created_at":"2026-05-18T03:39:07Z","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":"250d9aa99141a2734f1029e00f790e73eba0a401fcd352814f818e3339452111","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-04T22:34:22Z","title_canon_sha256":"fb0a0115b77d420d1801333e07a126d4140c6bfcb9868f6319bc0ca130d6df27"},"schema_version":"1.0","source":{"id":"1212.0897","kind":"arxiv","version":1}},"canonical_sha256":"50579bed944646aff2d2d1330bc8b21f1eeebbe4f465bafce009b153fe5695b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50579bed944646aff2d2d1330bc8b21f1eeebbe4f465bafce009b153fe5695b5","first_computed_at":"2026-05-18T03:39:07.005631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:39:07.005631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RNDcCPro44vIWu5b94RZ2zsH50n5Mi3sWyKqS1bdbQyO3F81QhFJOgm6BpjprgvvagK4j1HkUJzL3iD1qtJsCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:39:07.006185Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.0897","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8bee9ab751b0f37d2867753f13294a410246f7275c31cb97cd9c8e1433226a8","sha256:d98ebc00921bd529c30e7f451f5b3571216e17147ed4b9d2e759e83a5fb6c702"],"state_sha256":"c72e2e22c80d6cb24006d2f609ec3676a3d2f5983cd7ee47c49d25260fc78d24"}