{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:VDHCODGISNKUJ53QJRBKLYDBDQ","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":"d835ac13ae16e65240b7bd395afe63db643bfde3b43614488bf1b3340265f495","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-06-15T20:10:15Z","title_canon_sha256":"01db836d2f70e0cfeb28dccae348b810bcad148ae6ece5d33cf7bf4a9c2396d4"},"schema_version":"1.0","source":{"id":"0906.2780","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.2780","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"arxiv_version","alias_value":"0906.2780v1","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.2780","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"pith_short_12","alias_value":"VDHCODGISNKU","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VDHCODGISNKUJ53Q","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VDHCODGI","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:5e0e5698a587f13d5c6f9c804d95adbb105fd94f9cf4d623a8adf423925cc4bf","target":"graph","created_at":"2026-05-18T02:13:19Z","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 GJ 581 planetary system was already known to harbour three planets, including two super-Earths planets which straddle its habitable zone. We report here the detection of an additional planet -- GJ 581e -- with a minimum mass of 1.9 M_earth. With a period of 3.15 days, it is the innermost planet of the system and has a ~5% transit probability. We also correct our previous confusion of the orbital period of GJ 581d (the outermost planet) with a one-year alias, thanks to an extended time span and many more measurements. The revised period is 66.8 days, and locates the semi-major axis inside t","authors_text":"C. Lovis, C. Perrier, D. Queloz, F. Bouchy, F. Pepe, H. Beust, J.-L. Bertaux, M. Mayor, N. C. Santos, S. Udry, T. Forveille, X. Bonfils, X. Delfosse","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-06-15T20:10:15Z","title":"The HARPS search for southern extra-solar planets XVIII. An Earth-mass planet in the GJ 581 planetary system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.2780","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":"sha256:673afb0d371faef098c73ab54280fd55dc785e41434c0df53cc16fb9c6b6c662","target":"record","created_at":"2026-05-18T02:13:19Z","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":"d835ac13ae16e65240b7bd395afe63db643bfde3b43614488bf1b3340265f495","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-06-15T20:10:15Z","title_canon_sha256":"01db836d2f70e0cfeb28dccae348b810bcad148ae6ece5d33cf7bf4a9c2396d4"},"schema_version":"1.0","source":{"id":"0906.2780","kind":"arxiv","version":1}},"canonical_sha256":"a8ce270cc8935544f7704c42a5e0611c30c3104a9613f3ef0e33a4cf383c924c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8ce270cc8935544f7704c42a5e0611c30c3104a9613f3ef0e33a4cf383c924c","first_computed_at":"2026-05-18T02:13:19.937092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:19.937092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7JZWXiZxHw1I98r5Equ9vu3KDgvZitWAaW4nn2If8NhXrUEXsx0YIN98FKDFW65qZ77xMkwBgEYDtIkqRr5HBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:19.937822Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.2780","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:673afb0d371faef098c73ab54280fd55dc785e41434c0df53cc16fb9c6b6c662","sha256:5e0e5698a587f13d5c6f9c804d95adbb105fd94f9cf4d623a8adf423925cc4bf"],"state_sha256":"90d83877b9b03b1c5dc4df8bdf372a5951fa245611c75c629ee86596a7551b7f"}