{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:K6DHY56ALW6CWY44ELFC6QIDGL","short_pith_number":"pith:K6DHY56A","canonical_record":{"source":{"id":"0912.1896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-12-10T01:55:02Z","cross_cats_sorted":[],"title_canon_sha256":"f691bb50f8e9998a8f42179f9e346de42c9d5bfb918ea5bd853b069c07b28090","abstract_canon_sha256":"bf6eadd79a5b0d46d2c522dc0296ba983cd9986bf9dc59397adeac01ad308050"},"schema_version":"1.0"},"canonical_sha256":"57867c77c05dbc2b639c22ca2f410332ed1c6e5737b2320cfad8d59848d92853","source":{"kind":"arxiv","id":"0912.1896","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.1896","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"arxiv_version","alias_value":"0912.1896v1","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.1896","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"pith_short_12","alias_value":"K6DHY56ALW6C","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6DHY56ALW6CWY44","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6DHY56A","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:K6DHY56ALW6CWY44ELFC6QIDGL","target":"record","payload":{"canonical_record":{"source":{"id":"0912.1896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-12-10T01:55:02Z","cross_cats_sorted":[],"title_canon_sha256":"f691bb50f8e9998a8f42179f9e346de42c9d5bfb918ea5bd853b069c07b28090","abstract_canon_sha256":"bf6eadd79a5b0d46d2c522dc0296ba983cd9986bf9dc59397adeac01ad308050"},"schema_version":"1.0"},"canonical_sha256":"57867c77c05dbc2b639c22ca2f410332ed1c6e5737b2320cfad8d59848d92853","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:56.990724Z","signature_b64":"CyG8CseB25w9b79XRyMj/Jdslxa4zWQhQJLzRCMFsqJouAw1eojn0FGc9wl10yds4a06JJ4hSxzcBAyvsYdXCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57867c77c05dbc2b639c22ca2f410332ed1c6e5737b2320cfad8d59848d92853","last_reissued_at":"2026-05-18T02:33:56.990340Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:56.990340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.1896","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:33:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GRRkEgextAN5VY9bnzJFCLA+bdE0qpJuhMX+SvNFGzZwiOzuE5U/w9u6E9qfv3vX/N37o+UPC+HhzXo+fDWPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:47:36.767054Z"},"content_sha256":"1e6925391b1a3480690dfda2845f52f4924a470dd63bfd3c57ebae54470bbbca","schema_version":"1.0","event_id":"sha256:1e6925391b1a3480690dfda2845f52f4924a470dd63bfd3c57ebae54470bbbca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:K6DHY56ALW6CWY44ELFC6QIDGL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An application of Galactic parallax: the distance to the tidal stream GD-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andy Eyre","submitted_at":"2009-12-10T01:55:02Z","abstract_excerpt":"We assess the practicality of computing the distance to stellar streams in our Galaxy, using the method of Galactic parallax suggested by Eyre & Binney (2009). We find that the uncertainty in Galactic parallax is dependent upon the specific geometry of the problem in question. In the case of the tidal stream GD-1, the problem geometry indicates that available proper motion data, with individual accuracy ~4 mas/yr, should allow estimation of its distance with about 50 percent uncertainty. Proper motions accurate to ~1 mas/yr, which are expected from the forthcoming Pan-STARRS PS-1 survey, will "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.1896","kind":"arxiv","version":1},"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":"2026-05-18T02:33:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r9BchXPH/c+W4j+qz7pw+x6xi5pTvP9xxysLFm1XzFV+H58ksxvgxWSQ0UKGRflXW05t1EuEh715TQSuin74CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:47:36.767415Z"},"content_sha256":"71e04a6eae8245fb57fc16fb4b2688dc43cf686f239f9aa582710a1348d1fe0c","schema_version":"1.0","event_id":"sha256:71e04a6eae8245fb57fc16fb4b2688dc43cf686f239f9aa582710a1348d1fe0c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K6DHY56ALW6CWY44ELFC6QIDGL/bundle.json","state_url":"https://pith.science/pith/K6DHY56ALW6CWY44ELFC6QIDGL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K6DHY56ALW6CWY44ELFC6QIDGL/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":"2026-06-05T12:47:36Z","links":{"resolver":"https://pith.science/pith/K6DHY56ALW6CWY44ELFC6QIDGL","bundle":"https://pith.science/pith/K6DHY56ALW6CWY44ELFC6QIDGL/bundle.json","state":"https://pith.science/pith/K6DHY56ALW6CWY44ELFC6QIDGL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K6DHY56ALW6CWY44ELFC6QIDGL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:K6DHY56ALW6CWY44ELFC6QIDGL","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":"bf6eadd79a5b0d46d2c522dc0296ba983cd9986bf9dc59397adeac01ad308050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-12-10T01:55:02Z","title_canon_sha256":"f691bb50f8e9998a8f42179f9e346de42c9d5bfb918ea5bd853b069c07b28090"},"schema_version":"1.0","source":{"id":"0912.1896","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.1896","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"arxiv_version","alias_value":"0912.1896v1","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.1896","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"pith_short_12","alias_value":"K6DHY56ALW6C","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6DHY56ALW6CWY44","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6DHY56A","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:71e04a6eae8245fb57fc16fb4b2688dc43cf686f239f9aa582710a1348d1fe0c","target":"graph","created_at":"2026-05-18T02:33:56Z","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":"We assess the practicality of computing the distance to stellar streams in our Galaxy, using the method of Galactic parallax suggested by Eyre & Binney (2009). We find that the uncertainty in Galactic parallax is dependent upon the specific geometry of the problem in question. In the case of the tidal stream GD-1, the problem geometry indicates that available proper motion data, with individual accuracy ~4 mas/yr, should allow estimation of its distance with about 50 percent uncertainty. Proper motions accurate to ~1 mas/yr, which are expected from the forthcoming Pan-STARRS PS-1 survey, will ","authors_text":"Andy Eyre","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-12-10T01:55:02Z","title":"An application of Galactic parallax: the distance to the tidal stream GD-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.1896","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":"sha256:1e6925391b1a3480690dfda2845f52f4924a470dd63bfd3c57ebae54470bbbca","target":"record","created_at":"2026-05-18T02:33:56Z","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":"bf6eadd79a5b0d46d2c522dc0296ba983cd9986bf9dc59397adeac01ad308050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-12-10T01:55:02Z","title_canon_sha256":"f691bb50f8e9998a8f42179f9e346de42c9d5bfb918ea5bd853b069c07b28090"},"schema_version":"1.0","source":{"id":"0912.1896","kind":"arxiv","version":1}},"canonical_sha256":"57867c77c05dbc2b639c22ca2f410332ed1c6e5737b2320cfad8d59848d92853","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57867c77c05dbc2b639c22ca2f410332ed1c6e5737b2320cfad8d59848d92853","first_computed_at":"2026-05-18T02:33:56.990340Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:33:56.990340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CyG8CseB25w9b79XRyMj/Jdslxa4zWQhQJLzRCMFsqJouAw1eojn0FGc9wl10yds4a06JJ4hSxzcBAyvsYdXCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:33:56.990724Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.1896","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e6925391b1a3480690dfda2845f52f4924a470dd63bfd3c57ebae54470bbbca","sha256:71e04a6eae8245fb57fc16fb4b2688dc43cf686f239f9aa582710a1348d1fe0c"],"state_sha256":"b1dae1c95c28f150c1ccd22d15d282b136db82c7d560ae0bd88a6b90bcdf99b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z5EAGHdnxYduXv+dyj70Yx+O/mcFWfhzPAsEIuo9lbc3hrF4XSb/2XHAmLm4MWDLnGm1f/KRMx96reOCeH5VAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:47:36.769365Z","bundle_sha256":"513d11b62c3dbaa421c0968169db3a05e451001e21ff3ed0213e27a8b2a43108"}}