{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LYZ6DKFYGLF4AJONVAGQB5SX2Q","short_pith_number":"pith:LYZ6DKFY","canonical_record":{"source":{"id":"1201.2587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-01-12T15:16:43Z","cross_cats_sorted":[],"title_canon_sha256":"8c96aa6bf52ddb046fb6989534d825663dbd0a83fb748b40277a74886c3cc5ea","abstract_canon_sha256":"df666facece9d3aafb0826d66ca125c188bdfd19056eb316c72252af28fd2c21"},"schema_version":"1.0"},"canonical_sha256":"5e33e1a8b832cbc025cda80d00f657d437e1a8583038aa1e759fe38f689c00eb","source":{"kind":"arxiv","id":"1201.2587","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.2587","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"arxiv_version","alias_value":"1201.2587v2","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.2587","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"pith_short_12","alias_value":"LYZ6DKFYGLF4","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LYZ6DKFYGLF4AJON","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LYZ6DKFY","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LYZ6DKFYGLF4AJONVAGQB5SX2Q","target":"record","payload":{"canonical_record":{"source":{"id":"1201.2587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-01-12T15:16:43Z","cross_cats_sorted":[],"title_canon_sha256":"8c96aa6bf52ddb046fb6989534d825663dbd0a83fb748b40277a74886c3cc5ea","abstract_canon_sha256":"df666facece9d3aafb0826d66ca125c188bdfd19056eb316c72252af28fd2c21"},"schema_version":"1.0"},"canonical_sha256":"5e33e1a8b832cbc025cda80d00f657d437e1a8583038aa1e759fe38f689c00eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:52.114651Z","signature_b64":"uFJoeRREufE/MrlZ8wMh/e3jo8ZwY6YfZcu1boN3iiwLfxF1PEY/YNzCHABovFn+NHybWa+f9aY/9olzIyagDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e33e1a8b832cbc025cda80d00f657d437e1a8583038aa1e759fe38f689c00eb","last_reissued_at":"2026-05-18T01:58:52.113935Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:52.113935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1201.2587","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":"2026-05-18T01:58:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V9a4GSOlf/iuFGhhx+KtMqnft/K+EHtShSng5DsaPwuXgzAMTFno0V8fRBGJfv5XAAnBcLI3K5jURj1tkIv7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:52:37.398099Z"},"content_sha256":"4dd2b941d9a63217f91d0fe9086dd55c34bf997d2d3143c60784930e075621c2","schema_version":"1.0","event_id":"sha256:4dd2b941d9a63217f91d0fe9086dd55c34bf997d2d3143c60784930e075621c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LYZ6DKFYGLF4AJONVAGQB5SX2Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identification of known objects in solar system surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrea Milani, Davide Farnocchia, Eugene Magnier, Fabrizio Bernardi, Larry Denneau, Nick Kaiser, Paul A. Price, Richard J. Wainscoat, Robert Jedicke, Tommy Grav, William Burgett, Zoran Knezevic","submitted_at":"2012-01-12T15:16:43Z","abstract_excerpt":"The discovery of new objects in modern wide-field asteroid and comet surveys can be enhanced by first identifying observations belonging to known solar system objects. The assignation of new observations to a known object is an attribution problem that occurs when a least squares orbit already exists for the object but a separate fit is not possible to just the set of new observations. In this work we explore the strongly asymmetric attribution problem in which the existing least squares orbit is very well constrained and the new data are sparse. We describe an attribution algorithm that intro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.2587","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":"2026-05-18T01:58:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wVulCVneqcAcgSrbSZICG0YBQVp6kh2ykfnyPa1NExwF1Qq8TIb8HdoG31MGHTmAwAE4YXSQ/sZi1LnGHr19DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:52:37.398749Z"},"content_sha256":"40a7b14b4110fcc889ab8ec9b5bb62cd85ccc077ada4c8cba0bf3823f9059317","schema_version":"1.0","event_id":"sha256:40a7b14b4110fcc889ab8ec9b5bb62cd85ccc077ada4c8cba0bf3823f9059317"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/bundle.json","state_url":"https://pith.science/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/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":"2026-06-05T05:52:37Z","links":{"resolver":"https://pith.science/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q","bundle":"https://pith.science/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/bundle.json","state":"https://pith.science/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LYZ6DKFYGLF4AJONVAGQB5SX2Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LYZ6DKFYGLF4AJONVAGQB5SX2Q","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":"df666facece9d3aafb0826d66ca125c188bdfd19056eb316c72252af28fd2c21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-01-12T15:16:43Z","title_canon_sha256":"8c96aa6bf52ddb046fb6989534d825663dbd0a83fb748b40277a74886c3cc5ea"},"schema_version":"1.0","source":{"id":"1201.2587","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.2587","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"arxiv_version","alias_value":"1201.2587v2","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.2587","created_at":"2026-05-18T01:58:52Z"},{"alias_kind":"pith_short_12","alias_value":"LYZ6DKFYGLF4","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LYZ6DKFYGLF4AJON","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LYZ6DKFY","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:40a7b14b4110fcc889ab8ec9b5bb62cd85ccc077ada4c8cba0bf3823f9059317","target":"graph","created_at":"2026-05-18T01:58:52Z","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 discovery of new objects in modern wide-field asteroid and comet surveys can be enhanced by first identifying observations belonging to known solar system objects. The assignation of new observations to a known object is an attribution problem that occurs when a least squares orbit already exists for the object but a separate fit is not possible to just the set of new observations. In this work we explore the strongly asymmetric attribution problem in which the existing least squares orbit is very well constrained and the new data are sparse. We describe an attribution algorithm that intro","authors_text":"Andrea Milani, Davide Farnocchia, Eugene Magnier, Fabrizio Bernardi, Larry Denneau, Nick Kaiser, Paul A. Price, Richard J. Wainscoat, Robert Jedicke, Tommy Grav, William Burgett, Zoran Knezevic","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-01-12T15:16:43Z","title":"Identification of known objects in solar system surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.2587","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":"sha256:4dd2b941d9a63217f91d0fe9086dd55c34bf997d2d3143c60784930e075621c2","target":"record","created_at":"2026-05-18T01:58:52Z","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":"df666facece9d3aafb0826d66ca125c188bdfd19056eb316c72252af28fd2c21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-01-12T15:16:43Z","title_canon_sha256":"8c96aa6bf52ddb046fb6989534d825663dbd0a83fb748b40277a74886c3cc5ea"},"schema_version":"1.0","source":{"id":"1201.2587","kind":"arxiv","version":2}},"canonical_sha256":"5e33e1a8b832cbc025cda80d00f657d437e1a8583038aa1e759fe38f689c00eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e33e1a8b832cbc025cda80d00f657d437e1a8583038aa1e759fe38f689c00eb","first_computed_at":"2026-05-18T01:58:52.113935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:52.113935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uFJoeRREufE/MrlZ8wMh/e3jo8ZwY6YfZcu1boN3iiwLfxF1PEY/YNzCHABovFn+NHybWa+f9aY/9olzIyagDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:52.114651Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.2587","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4dd2b941d9a63217f91d0fe9086dd55c34bf997d2d3143c60784930e075621c2","sha256:40a7b14b4110fcc889ab8ec9b5bb62cd85ccc077ada4c8cba0bf3823f9059317"],"state_sha256":"aebef924947fa42c15e65abf5c6af88182d408dc00619b850ae6c74acb80b6aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VGe71lOqnLMLRKh9z5++6Oa1omqCPm0oNuHcG5UW2rghysMKQmizJoMuO/FmbjLlKNMgaV1407uIXqwskeWOAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T05:52:37.401907Z","bundle_sha256":"c0fed70eace868b96cd882248920f8bfc5352a23f0a527a6a2c09d46c65492e0"}}