{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:SBBVXK5E64OZIP52KTCDJ2HUMP","short_pith_number":"pith:SBBVXK5E","schema_version":"1.0","canonical_sha256":"90435baba4f71d943fba54c434e8f463db1170168571bd6328c7b4ca8f133b8d","source":{"kind":"arxiv","id":"2204.13960","version":1},"attestation_state":"computed","paper":{"title":"Water Ortho-to-Para ratio in the coma of comet 67P/Churyumov-Gerasimenko","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. Leyrat, D. Bockel\\'ee-Morvan, F. Capaccioni, G. Filacchione, J. Crovisier, M.-L. Dubernet, M. Roos-Serote, P. Drossart, S. Erard, T. Encrenaz, V. Debout, Y.-C. Cheng","submitted_at":"2022-04-29T09:12:27Z","abstract_excerpt":"Abundance ratios of the nuclear-spin isomers of H$_2$O and NH$_3$ have been measured in about two dozen comets, with a mean value corresponding to a nuclear-spin temperature of $\\sim$ 30 K. The real meaning of these unequilibrated nuclear-spin abundance ratios is still debated. However, an equilibrated water ortho-to-para ratio (OPR) of 3 is also commonly observed. The H channel of VIRTIS (VIRTIS-H) on board Rosetta provided high-resolution 2.5--2.9 $\\mu$m spectra of H$_2$O vapour in the coma of comet 67P/Churyumov-Gerasimenko (67P), which are suitable for the determination of the OPR of water"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2204.13960","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-04-29T09:12:27Z","cross_cats_sorted":[],"title_canon_sha256":"dfc49a61f6e235aeea9cd4bd0cbc07eff46c6e69461fe31bfb0753db80cd5b29","abstract_canon_sha256":"a41bac95715c7d8b616971b26c3bfcb978077df80819d537cc6f998074836f2d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:18:55.475008Z","signature_b64":"yTTEaL2wwTIivwdU5QiNBEJVXRvWhLZiJs1pjrlCt8XtdxZ71wUH6MFIzoIUV2kDNlFBlkFVrKUcxHQUI6tgCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90435baba4f71d943fba54c434e8f463db1170168571bd6328c7b4ca8f133b8d","last_reissued_at":"2026-07-05T04:18:55.474621Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:18:55.474621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Water Ortho-to-Para ratio in the coma of comet 67P/Churyumov-Gerasimenko","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. Leyrat, D. Bockel\\'ee-Morvan, F. Capaccioni, G. Filacchione, J. Crovisier, M.-L. Dubernet, M. Roos-Serote, P. Drossart, S. Erard, T. Encrenaz, V. Debout, Y.-C. Cheng","submitted_at":"2022-04-29T09:12:27Z","abstract_excerpt":"Abundance ratios of the nuclear-spin isomers of H$_2$O and NH$_3$ have been measured in about two dozen comets, with a mean value corresponding to a nuclear-spin temperature of $\\sim$ 30 K. The real meaning of these unequilibrated nuclear-spin abundance ratios is still debated. However, an equilibrated water ortho-to-para ratio (OPR) of 3 is also commonly observed. The H channel of VIRTIS (VIRTIS-H) on board Rosetta provided high-resolution 2.5--2.9 $\\mu$m spectra of H$_2$O vapour in the coma of comet 67P/Churyumov-Gerasimenko (67P), which are suitable for the determination of the OPR of water"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.13960","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.13960/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2204.13960","created_at":"2026-07-05T04:18:55.474687+00:00"},{"alias_kind":"arxiv_version","alias_value":"2204.13960v1","created_at":"2026-07-05T04:18:55.474687+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.13960","created_at":"2026-07-05T04:18:55.474687+00:00"},{"alias_kind":"pith_short_12","alias_value":"SBBVXK5E64OZ","created_at":"2026-07-05T04:18:55.474687+00:00"},{"alias_kind":"pith_short_16","alias_value":"SBBVXK5E64OZIP52","created_at":"2026-07-05T04:18:55.474687+00:00"},{"alias_kind":"pith_short_8","alias_value":"SBBVXK5E","created_at":"2026-07-05T04:18:55.474687+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.05925","citing_title":"A D/H Ratio Consistent with Earth's Water in Halley-type Comet 12P from ALMA HDO Mapping","ref_index":65,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP","json":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP.json","graph_json":"https://pith.science/api/pith-number/SBBVXK5E64OZIP52KTCDJ2HUMP/graph.json","events_json":"https://pith.science/api/pith-number/SBBVXK5E64OZIP52KTCDJ2HUMP/events.json","paper":"https://pith.science/paper/SBBVXK5E"},"agent_actions":{"view_html":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP","download_json":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP.json","view_paper":"https://pith.science/paper/SBBVXK5E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2204.13960&json=true","fetch_graph":"https://pith.science/api/pith-number/SBBVXK5E64OZIP52KTCDJ2HUMP/graph.json","fetch_events":"https://pith.science/api/pith-number/SBBVXK5E64OZIP52KTCDJ2HUMP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP/action/storage_attestation","attest_author":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP/action/author_attestation","sign_citation":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP/action/citation_signature","submit_replication":"https://pith.science/pith/SBBVXK5E64OZIP52KTCDJ2HUMP/action/replication_record"}},"created_at":"2026-07-05T04:18:55.474687+00:00","updated_at":"2026-07-05T04:18:55.474687+00:00"}