{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:YMTZUOXTCDVEOSREDXIHLCOV5C","short_pith_number":"pith:YMTZUOXT","canonical_record":{"source":{"id":"2503.16142","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-03-20T13:45:43Z","cross_cats_sorted":[],"title_canon_sha256":"059327f7d28386fbf6b42d77c113979f76ebbc6c9355e4004afdf49cdc5129ac","abstract_canon_sha256":"a3fb823b1b98c730819c1ec2eb44e6ee339474db6f6daefd9fbae648670f75b4"},"schema_version":"1.0"},"canonical_sha256":"c3279a3af310ea474a241dd07589d5e8947171104f99952ce0221066b0867be5","source":{"kind":"arxiv","id":"2503.16142","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.16142","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"arxiv_version","alias_value":"2503.16142v1","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.16142","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_12","alias_value":"YMTZUOXTCDVE","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_16","alias_value":"YMTZUOXTCDVEOSRE","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_8","alias_value":"YMTZUOXT","created_at":"2026-07-05T10:36:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:YMTZUOXTCDVEOSREDXIHLCOV5C","target":"record","payload":{"canonical_record":{"source":{"id":"2503.16142","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-03-20T13:45:43Z","cross_cats_sorted":[],"title_canon_sha256":"059327f7d28386fbf6b42d77c113979f76ebbc6c9355e4004afdf49cdc5129ac","abstract_canon_sha256":"a3fb823b1b98c730819c1ec2eb44e6ee339474db6f6daefd9fbae648670f75b4"},"schema_version":"1.0"},"canonical_sha256":"c3279a3af310ea474a241dd07589d5e8947171104f99952ce0221066b0867be5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:36:06.430478Z","signature_b64":"VFBW7TVoSxtT2dKlt0IfCVsAPBbI4SF7GJp7XKjCLXK3b5q5z/5deeJdN/P8yPhhPd8y4CPpzy8ktzv0QSzmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3279a3af310ea474a241dd07589d5e8947171104f99952ce0221066b0867be5","last_reissued_at":"2026-07-05T10:36:06.430025Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:36:06.430025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.16142","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":"2026-07-05T10:36:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uUF9tqWTIPfiKteIoWu03zkWDSylCmYuA2wAKA9a0FJKIBZFzlj2AHH2mUNtYAmUpPKDo/TDcdV+S+XcZ15TCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:30:27.125956Z"},"content_sha256":"849b32dbe810cdd56e35086da3fcc85850f0e6ca4482e53209979d1821a7b917","schema_version":"1.0","event_id":"sha256:849b32dbe810cdd56e35086da3fcc85850f0e6ca4482e53209979d1821a7b917"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:YMTZUOXTCDVEOSREDXIHLCOV5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prediction and observation of a stellar occultation by Haumea's satellite Namaka","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"B. C. N. Proudfoot, B. J. Holler, E. Fern\\'andez-Valenzuela, F. L. Rommel, J. L. Ortiz","submitted_at":"2025-03-20T13:45:43Z","abstract_excerpt":"Stellar occultations are an ideal way to characterize the physical and orbital properties of trans-Neptunian binary systems. In this research note, we detail the prediction and observation of a stellar occultation observed with NASA's IRTF on March 16$^{\\mathrm{th}}$, 2025 (UT), with drop-outs from both the dwarf planet Haumea and its smaller satellite Namaka. This occultation places a lower limit of 83 $\\pm$ 2 km on Namaka's diameter. We also discuss the possibility that this detection could help to constrain the orbit of Namaka, measure Haumea's gravitational harmonics, and provide a path to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.16142","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/2503.16142/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:36:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N+wCIMQrnHTz4bQKt3buJPtdFxYaqOMfbssuFa6Jr7HhiqSeRJWC+OwDZu2vpn0Q5QifEvAvTmgR78bTJX9HAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:30:27.126359Z"},"content_sha256":"0297987c2e2f72424e4fee2d2169857b217b22df50bd04be42385a2fb18c8824","schema_version":"1.0","event_id":"sha256:0297987c2e2f72424e4fee2d2169857b217b22df50bd04be42385a2fb18c8824"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/bundle.json","state_url":"https://pith.science/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/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":"2026-07-05T14:30:27Z","links":{"resolver":"https://pith.science/pith/YMTZUOXTCDVEOSREDXIHLCOV5C","bundle":"https://pith.science/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/bundle.json","state":"https://pith.science/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YMTZUOXTCDVEOSREDXIHLCOV5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:YMTZUOXTCDVEOSREDXIHLCOV5C","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":"a3fb823b1b98c730819c1ec2eb44e6ee339474db6f6daefd9fbae648670f75b4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-03-20T13:45:43Z","title_canon_sha256":"059327f7d28386fbf6b42d77c113979f76ebbc6c9355e4004afdf49cdc5129ac"},"schema_version":"1.0","source":{"id":"2503.16142","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.16142","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"arxiv_version","alias_value":"2503.16142v1","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.16142","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_12","alias_value":"YMTZUOXTCDVE","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_16","alias_value":"YMTZUOXTCDVEOSRE","created_at":"2026-07-05T10:36:06Z"},{"alias_kind":"pith_short_8","alias_value":"YMTZUOXT","created_at":"2026-07-05T10:36:06Z"}],"graph_snapshots":[{"event_id":"sha256:0297987c2e2f72424e4fee2d2169857b217b22df50bd04be42385a2fb18c8824","target":"graph","created_at":"2026-07-05T10:36:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2503.16142/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stellar occultations are an ideal way to characterize the physical and orbital properties of trans-Neptunian binary systems. In this research note, we detail the prediction and observation of a stellar occultation observed with NASA's IRTF on March 16$^{\\mathrm{th}}$, 2025 (UT), with drop-outs from both the dwarf planet Haumea and its smaller satellite Namaka. This occultation places a lower limit of 83 $\\pm$ 2 km on Namaka's diameter. We also discuss the possibility that this detection could help to constrain the orbit of Namaka, measure Haumea's gravitational harmonics, and provide a path to","authors_text":"B. C. N. Proudfoot, B. J. Holler, E. Fern\\'andez-Valenzuela, F. L. Rommel, J. L. Ortiz","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-03-20T13:45:43Z","title":"Prediction and observation of a stellar occultation by Haumea's satellite Namaka"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.16142","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":"sha256:849b32dbe810cdd56e35086da3fcc85850f0e6ca4482e53209979d1821a7b917","target":"record","created_at":"2026-07-05T10:36:06Z","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":"a3fb823b1b98c730819c1ec2eb44e6ee339474db6f6daefd9fbae648670f75b4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-03-20T13:45:43Z","title_canon_sha256":"059327f7d28386fbf6b42d77c113979f76ebbc6c9355e4004afdf49cdc5129ac"},"schema_version":"1.0","source":{"id":"2503.16142","kind":"arxiv","version":1}},"canonical_sha256":"c3279a3af310ea474a241dd07589d5e8947171104f99952ce0221066b0867be5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3279a3af310ea474a241dd07589d5e8947171104f99952ce0221066b0867be5","first_computed_at":"2026-07-05T10:36:06.430025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:36:06.430025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VFBW7TVoSxtT2dKlt0IfCVsAPBbI4SF7GJp7XKjCLXK3b5q5z/5deeJdN/P8yPhhPd8y4CPpzy8ktzv0QSzmBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:36:06.430478Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.16142","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:849b32dbe810cdd56e35086da3fcc85850f0e6ca4482e53209979d1821a7b917","sha256:0297987c2e2f72424e4fee2d2169857b217b22df50bd04be42385a2fb18c8824"],"state_sha256":"99cc102e4ee365ae31f42dc1cd7d6f30a6de0dbb3ea85800b6ffd5044fe1799b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2npV6Zh6y2cgr6uefd5x5+hxEf0l5QN5cvQOtm0h7ZOBz5SsatnvLVhtH3jr/0FRefKEojf/QaJyclJilDs6Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T14:30:27.129115Z","bundle_sha256":"dbfa7dd5ebe67885ec96a5bdc88c47a0295cea8e92b0436c96f6d480c06c11a9"}}