{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:JK3OOEHFNDKUJTEFHCKNUUJCAW","short_pith_number":"pith:JK3OOEHF","canonical_record":{"source":{"id":"1006.2383","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-11T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9e99d9fd3ba461d6ac17fac683f94b57118c08cce641392d8d3c71c1c8140120","abstract_canon_sha256":"1855fc90513d95ad2d82374442aaec1a59217e4f53976029ed959d3de7a8b14b"},"schema_version":"1.0"},"canonical_sha256":"4ab6e710e568d544cc853894da51220592477e86c5d7d6d302c927f45f23b3dc","source":{"kind":"arxiv","id":"1006.2383","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.2383","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"arxiv_version","alias_value":"1006.2383v2","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.2383","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"pith_short_12","alias_value":"JK3OOEHFNDKU","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JK3OOEHFNDKUJTEF","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JK3OOEHF","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:JK3OOEHFNDKUJTEFHCKNUUJCAW","target":"record","payload":{"canonical_record":{"source":{"id":"1006.2383","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-11T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9e99d9fd3ba461d6ac17fac683f94b57118c08cce641392d8d3c71c1c8140120","abstract_canon_sha256":"1855fc90513d95ad2d82374442aaec1a59217e4f53976029ed959d3de7a8b14b"},"schema_version":"1.0"},"canonical_sha256":"4ab6e710e568d544cc853894da51220592477e86c5d7d6d302c927f45f23b3dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:54.391469Z","signature_b64":"K05ef7DP2K6X0p8ujayuZmjYU/IYOwuWuZngyx+/ZrTzl50q2LJk1EIGIHcXsFKB9QK2cVX7r//SE+b/PJzpDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ab6e710e568d544cc853894da51220592477e86c5d7d6d302c927f45f23b3dc","last_reissued_at":"2026-05-18T02:06:54.390705Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:54.390705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.2383","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:06:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tEsQ3VyI4G157hmDOn1wS2kDmedg4r4R711j9I8Nzoj7gC+n6X88pU1QsiK7AvYYKomu7ASEhDEdcnRjMgJeAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:04:56.440424Z"},"content_sha256":"432c2baebce7c498fbb6221dbc093d755d21b18f7c518431a07670ddf22e5c5d","schema_version":"1.0","event_id":"sha256:432c2baebce7c498fbb6221dbc093d755d21b18f7c518431a07670ddf22e5c5d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:JK3OOEHFNDKUJTEFHCKNUUJCAW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improved radial velocity orbit of the young binary brown dwarf candidate ChaHa8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Mueller, S. Reffert (MPIA, V. Joergens, ZAH Heidelberg)","submitted_at":"2010-06-11T20:00:03Z","abstract_excerpt":"The very young brown dwarf candidate ChaHa8 was recently discovered to have a close (~1AU) companion by means of radial velocity monitoring. We present additional radial velocity data obtained with UVES/VLT between 2007 and 2010, which significantly improve the orbit of the system. The combined data set spans ten years of radial velocity monitoring for ChaHa8. A Kepler fit to the data yields an orbital period of 5.2 yrs, an eccentricity of 0.59, and a radial velocity semi-amplitude of 2.4 km/s. A companion mass M2sini (which is a lower limit due to the unknown orbital inclination) of 25 Mjup a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.2383","kind":"arxiv","version":2},"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":"2026-05-18T02:06:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IVBoG+jowBh69xF2SRCR3VukZ4vyeEOMj2yCAd4OCAADdXAqaDHFQ+9OcBoiveOlLePQR5gWRE5U3J9+1aGIBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:04:56.441144Z"},"content_sha256":"faf8ebb0d7175f7d08ddfba5579ed7a6266a7fe07ef6fbeab15eb575b123e74a","schema_version":"1.0","event_id":"sha256:faf8ebb0d7175f7d08ddfba5579ed7a6266a7fe07ef6fbeab15eb575b123e74a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/bundle.json","state_url":"https://pith.science/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/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":"2026-06-08T02:04:56Z","links":{"resolver":"https://pith.science/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW","bundle":"https://pith.science/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/bundle.json","state":"https://pith.science/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JK3OOEHFNDKUJTEFHCKNUUJCAW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:JK3OOEHFNDKUJTEFHCKNUUJCAW","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":"1855fc90513d95ad2d82374442aaec1a59217e4f53976029ed959d3de7a8b14b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-11T20:00:03Z","title_canon_sha256":"9e99d9fd3ba461d6ac17fac683f94b57118c08cce641392d8d3c71c1c8140120"},"schema_version":"1.0","source":{"id":"1006.2383","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.2383","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"arxiv_version","alias_value":"1006.2383v2","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.2383","created_at":"2026-05-18T02:06:54Z"},{"alias_kind":"pith_short_12","alias_value":"JK3OOEHFNDKU","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JK3OOEHFNDKUJTEF","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JK3OOEHF","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:faf8ebb0d7175f7d08ddfba5579ed7a6266a7fe07ef6fbeab15eb575b123e74a","target":"graph","created_at":"2026-05-18T02:06:54Z","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 very young brown dwarf candidate ChaHa8 was recently discovered to have a close (~1AU) companion by means of radial velocity monitoring. We present additional radial velocity data obtained with UVES/VLT between 2007 and 2010, which significantly improve the orbit of the system. The combined data set spans ten years of radial velocity monitoring for ChaHa8. A Kepler fit to the data yields an orbital period of 5.2 yrs, an eccentricity of 0.59, and a radial velocity semi-amplitude of 2.4 km/s. A companion mass M2sini (which is a lower limit due to the unknown orbital inclination) of 25 Mjup a","authors_text":"A. Mueller, S. Reffert (MPIA, V. Joergens, ZAH Heidelberg)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-11T20:00:03Z","title":"Improved radial velocity orbit of the young binary brown dwarf candidate ChaHa8"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.2383","kind":"arxiv","version":2},"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":"sha256:432c2baebce7c498fbb6221dbc093d755d21b18f7c518431a07670ddf22e5c5d","target":"record","created_at":"2026-05-18T02:06:54Z","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":"1855fc90513d95ad2d82374442aaec1a59217e4f53976029ed959d3de7a8b14b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-11T20:00:03Z","title_canon_sha256":"9e99d9fd3ba461d6ac17fac683f94b57118c08cce641392d8d3c71c1c8140120"},"schema_version":"1.0","source":{"id":"1006.2383","kind":"arxiv","version":2}},"canonical_sha256":"4ab6e710e568d544cc853894da51220592477e86c5d7d6d302c927f45f23b3dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ab6e710e568d544cc853894da51220592477e86c5d7d6d302c927f45f23b3dc","first_computed_at":"2026-05-18T02:06:54.390705Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:54.390705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K05ef7DP2K6X0p8ujayuZmjYU/IYOwuWuZngyx+/ZrTzl50q2LJk1EIGIHcXsFKB9QK2cVX7r//SE+b/PJzpDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:54.391469Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.2383","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:432c2baebce7c498fbb6221dbc093d755d21b18f7c518431a07670ddf22e5c5d","sha256:faf8ebb0d7175f7d08ddfba5579ed7a6266a7fe07ef6fbeab15eb575b123e74a"],"state_sha256":"9b04174b02dbbd2f3e2837467ebf7e43d0dbc0affc0ebae067ed6614484e05c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P/mWxQHY7mA4LL7AWnXYAoAXOJHSddCYfbvoh3KmJ61LJVVIzlsKy5rUPUymb76MLSat0aTWpxgzvUsTSElrCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T02:04:56.444864Z","bundle_sha256":"e230b02722cfbe11bde2d5c6374b616cd46fe7de201967d4e3a8a741c6028adf"}}