{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:E37Z4MRLECG6QKIJOGV3OF2YCN","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":"6deabf3a87e02a21018732ea893bba32cc8b91b90851e027caf1aae10330e869","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-23T18:58:08Z","title_canon_sha256":"5afe658ae3cbd3dc6c6086d28026e4203c1197f947ebfba65014b87d19a4e095"},"schema_version":"1.0","source":{"id":"1307.6191","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6191","created_at":"2026-05-18T03:17:45Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6191v1","created_at":"2026-05-18T03:17:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6191","created_at":"2026-05-18T03:17:45Z"},{"alias_kind":"pith_short_12","alias_value":"E37Z4MRLECG6","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"E37Z4MRLECG6QKIJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"E37Z4MRL","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:de072096dd66b79c57693715ad6d0a84e5819dced67339ba70d69ab64947db58","target":"graph","created_at":"2026-05-18T03:17:45Z","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 present results from SEPPCoN, an on-going Survey of the Ensemble Physical Properties of Cometary Nuclei. In this report we discuss mid-infrared measurements of the thermal emission from 89 nuclei of Jupiter-family comets (JFCs). All data were obtained in 2006 and 2007 with the Spitzer Space Telescope. For all 89 comets, we present new effective radii, and for 57 comets we present beaming parameters. Thus our survey provides the largest compilation of radiometrically-derived physical properties of nuclei to date. We conclude the following. (a) The average beaming parameter of the JFC populat","authors_text":"A. Fitzsimmons, C. M. Lisse, C. Snodgrass, H. A. Weaver, H. Campins, I. Toth, J. Licandro, J. M. Bauer, J. Pittichova, K. J. Meech, M. F. A'Hearn, M. S. Kelley, O. Groussin, P. L. Lamy, S. C. Lowry, W. T. Reach, Y. R. Fernandez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-23T18:58:08Z","title":"Thermal Properties, Sizes, and Size Distribution of Jupiter-Family Cometary Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6191","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:df65a62ce699a83e18d3e7e2768c1cbd9f4b0e8ed29f32ce8a2b52e6cd1ddffb","target":"record","created_at":"2026-05-18T03:17:45Z","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":"6deabf3a87e02a21018732ea893bba32cc8b91b90851e027caf1aae10330e869","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-23T18:58:08Z","title_canon_sha256":"5afe658ae3cbd3dc6c6086d28026e4203c1197f947ebfba65014b87d19a4e095"},"schema_version":"1.0","source":{"id":"1307.6191","kind":"arxiv","version":1}},"canonical_sha256":"26ff9e322b208de8290971abb7175813527c8630566957becc71693a87cafa32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"26ff9e322b208de8290971abb7175813527c8630566957becc71693a87cafa32","first_computed_at":"2026-05-18T03:17:45.113469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:45.113469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QMr8NqEZRnoAJJz31j7lI/gSD6swCD1W6GSFh87UOKPlycQ5LLqBrxRFjHdAhAo+lu74TdHkf2ku/LuGKvzSBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:45.113953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.6191","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df65a62ce699a83e18d3e7e2768c1cbd9f4b0e8ed29f32ce8a2b52e6cd1ddffb","sha256:de072096dd66b79c57693715ad6d0a84e5819dced67339ba70d69ab64947db58"],"state_sha256":"ef75e9bf8d0789391af5d24126371b79b8e09510266ab3f0610dc902a2c844ef"}