{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:R6K6GGBNKYSPOAMEQ7N37FWZUN","short_pith_number":"pith:R6K6GGBN","canonical_record":{"source":{"id":"1404.5847","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-23T14:59:33Z","cross_cats_sorted":[],"title_canon_sha256":"dfa34831b57941b7f4e64b1cf6a747992147e128e197109210c0964511759428","abstract_canon_sha256":"fac5848b1205cdfb75b61721cd013a52d33f57a1b52764e7bf78ad824c0871ca"},"schema_version":"1.0"},"canonical_sha256":"8f95e3182d5624f7018487dbbf96d9a343dc68559663a06bd6671c5b7c5e1ec5","source":{"kind":"arxiv","id":"1404.5847","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5847","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5847v1","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5847","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"pith_short_12","alias_value":"R6K6GGBNKYSP","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"R6K6GGBNKYSPOAME","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"R6K6GGBN","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:R6K6GGBNKYSPOAMEQ7N37FWZUN","target":"record","payload":{"canonical_record":{"source":{"id":"1404.5847","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-23T14:59:33Z","cross_cats_sorted":[],"title_canon_sha256":"dfa34831b57941b7f4e64b1cf6a747992147e128e197109210c0964511759428","abstract_canon_sha256":"fac5848b1205cdfb75b61721cd013a52d33f57a1b52764e7bf78ad824c0871ca"},"schema_version":"1.0"},"canonical_sha256":"8f95e3182d5624f7018487dbbf96d9a343dc68559663a06bd6671c5b7c5e1ec5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:50:33.469453Z","signature_b64":"B0NoQHztztEbSyEWy9qdxwnDHlvOLA+lyHvk7Ze+n/zENQF1bz+WqX8c3Gx3bxecPGxQYZy8IE+tFHmgwNZfBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f95e3182d5624f7018487dbbf96d9a343dc68559663a06bd6671c5b7c5e1ec5","last_reissued_at":"2026-05-18T02:50:33.468818Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:50:33.468818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.5847","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":"2026-05-18T02:50:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iUjEyQs6Ep4OJFbwDsZStfQlsTbzuQE06VrOpxcuHz8nenFIV4ichjLCtdAqQ6xWY4oNtAf/bDVtj5In5kQHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:00:18.542674Z"},"content_sha256":"432efe9fc22d93624c1957d56277d7fb2c877fd11435a072e1ea5d99d204f2d0","schema_version":"1.0","event_id":"sha256:432efe9fc22d93624c1957d56277d7fb2c877fd11435a072e1ea5d99d204f2d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:R6K6GGBNKYSPOAMEQ7N37FWZUN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal Infrared Observations of Asteroid (99942) Apophis with Herschel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"B. Altieri, C. Kiss, E. Vilenius, L. O'Rourke, P. Pravec, P. Scheirich, T. G. M\\\"uller","submitted_at":"2014-04-23T14:59:33Z","abstract_excerpt":"The near-Earth asteroid (99942) Apophis is a potentially hazardous asteroid. We obtained far-infrared observations of this asteroid with the Herschel Space Observatory's PACS instrument at 70, 100, and 160 micron. These were taken at two epochs in January and March 2013 during a close Earth encounter. These first thermal measurements of Apophis were taken at similar phase angles before and after opposition. We performed a detailed thermophysical model analysis by using the spin and shape model recently derived from applying a 2-period Fourier series method to a large sample of well-calibrated "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5847","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":"2026-05-18T02:50:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aV2vo4VJg0gTAnUrN7LVSizwXhSfDvtE4tdPUydynThnsBvVWRse+A6Il1FscwaVQ5BnruQB6cPIDuMIbFRYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:00:18.543022Z"},"content_sha256":"0c524d1f00000b4d3ad7d9dcbe900e2a683267d2bd27cbec4826ef2005da7b3c","schema_version":"1.0","event_id":"sha256:0c524d1f00000b4d3ad7d9dcbe900e2a683267d2bd27cbec4826ef2005da7b3c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/bundle.json","state_url":"https://pith.science/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/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":"2026-06-08T23:00:18Z","links":{"resolver":"https://pith.science/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN","bundle":"https://pith.science/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/bundle.json","state":"https://pith.science/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R6K6GGBNKYSPOAMEQ7N37FWZUN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:R6K6GGBNKYSPOAMEQ7N37FWZUN","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":"fac5848b1205cdfb75b61721cd013a52d33f57a1b52764e7bf78ad824c0871ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-23T14:59:33Z","title_canon_sha256":"dfa34831b57941b7f4e64b1cf6a747992147e128e197109210c0964511759428"},"schema_version":"1.0","source":{"id":"1404.5847","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5847","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5847v1","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5847","created_at":"2026-05-18T02:50:33Z"},{"alias_kind":"pith_short_12","alias_value":"R6K6GGBNKYSP","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"R6K6GGBNKYSPOAME","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"R6K6GGBN","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:0c524d1f00000b4d3ad7d9dcbe900e2a683267d2bd27cbec4826ef2005da7b3c","target":"graph","created_at":"2026-05-18T02:50:33Z","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 near-Earth asteroid (99942) Apophis is a potentially hazardous asteroid. We obtained far-infrared observations of this asteroid with the Herschel Space Observatory's PACS instrument at 70, 100, and 160 micron. These were taken at two epochs in January and March 2013 during a close Earth encounter. These first thermal measurements of Apophis were taken at similar phase angles before and after opposition. We performed a detailed thermophysical model analysis by using the spin and shape model recently derived from applying a 2-period Fourier series method to a large sample of well-calibrated ","authors_text":"B. Altieri, C. Kiss, E. Vilenius, L. O'Rourke, P. Pravec, P. Scheirich, T. G. M\\\"uller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-23T14:59:33Z","title":"Thermal Infrared Observations of Asteroid (99942) Apophis with Herschel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5847","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":"sha256:432efe9fc22d93624c1957d56277d7fb2c877fd11435a072e1ea5d99d204f2d0","target":"record","created_at":"2026-05-18T02:50:33Z","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":"fac5848b1205cdfb75b61721cd013a52d33f57a1b52764e7bf78ad824c0871ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-23T14:59:33Z","title_canon_sha256":"dfa34831b57941b7f4e64b1cf6a747992147e128e197109210c0964511759428"},"schema_version":"1.0","source":{"id":"1404.5847","kind":"arxiv","version":1}},"canonical_sha256":"8f95e3182d5624f7018487dbbf96d9a343dc68559663a06bd6671c5b7c5e1ec5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f95e3182d5624f7018487dbbf96d9a343dc68559663a06bd6671c5b7c5e1ec5","first_computed_at":"2026-05-18T02:50:33.468818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:50:33.468818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B0NoQHztztEbSyEWy9qdxwnDHlvOLA+lyHvk7Ze+n/zENQF1bz+WqX8c3Gx3bxecPGxQYZy8IE+tFHmgwNZfBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:50:33.469453Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.5847","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:432efe9fc22d93624c1957d56277d7fb2c877fd11435a072e1ea5d99d204f2d0","sha256:0c524d1f00000b4d3ad7d9dcbe900e2a683267d2bd27cbec4826ef2005da7b3c"],"state_sha256":"f8981ffdc1182ef024f7c84ddc9d7ef2ad8f6c9cdb77a2433077e823ab1de672"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SEOldre0dpDm6jZDURW/JpPwbYlhTBrSWk4dGq4NPirP/WuOz5XiAM6y602x1v4J38Buri+T4Ns8fa0vQP/bAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T23:00:18.544897Z","bundle_sha256":"7f85f2ff38fa59e3304620b1428f5336c53295bb5e51b3b31a78025bca82446d"}}