{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:HZQZFQO34CSJGCLO5FWXJSYMH3","short_pith_number":"pith:HZQZFQO3","canonical_record":{"source":{"id":"2107.02771","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-07-06T17:28:57Z","cross_cats_sorted":[],"title_canon_sha256":"b360e802c41f97aa3bfa0fbbc49f03acc4c65b742bfa559f3e51fb9af15ff1a3","abstract_canon_sha256":"8f2d59aed23ae27214c21892d2ece75f6b0685070f9f0479dbabe5ec5fe6c2d3"},"schema_version":"1.0"},"canonical_sha256":"3e6192c1dbe0a493096ee96d74cb0c3ee5394e92bc4a3c44b47ee35284fa80e4","source":{"kind":"arxiv","id":"2107.02771","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.02771","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2107.02771v1","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.02771","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"HZQZFQO34CSJ","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"HZQZFQO34CSJGCLO","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"HZQZFQO3","created_at":"2026-07-05T02:55:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:HZQZFQO34CSJGCLO5FWXJSYMH3","target":"record","payload":{"canonical_record":{"source":{"id":"2107.02771","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-07-06T17:28:57Z","cross_cats_sorted":[],"title_canon_sha256":"b360e802c41f97aa3bfa0fbbc49f03acc4c65b742bfa559f3e51fb9af15ff1a3","abstract_canon_sha256":"8f2d59aed23ae27214c21892d2ece75f6b0685070f9f0479dbabe5ec5fe6c2d3"},"schema_version":"1.0"},"canonical_sha256":"3e6192c1dbe0a493096ee96d74cb0c3ee5394e92bc4a3c44b47ee35284fa80e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:55:23.887699Z","signature_b64":"KA1nEeYN78RTlwMF0zbtYH7W1muHGigkKXLVgiJbB0wmg28dFM5EqSHrXA0iT/YuC7Zl2qwEj64m6TxvMLv3AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e6192c1dbe0a493096ee96d74cb0c3ee5394e92bc4a3c44b47ee35284fa80e4","last_reissued_at":"2026-07-05T02:55:23.887191Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:55:23.887191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.02771","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":"2026-07-05T02:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JR+h8i7v2g9gPTr0B5ie3mFQ577mSRVsbjIfHsf4kJ8cI2kFO00kVsJ+Z7674PDon5sdH/15WtJEMmpvVeXXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:08:29.769543Z"},"content_sha256":"41f8161ec5bfa30a9f07439636771e8b25b840554fb604a6a972423d3f739f85","schema_version":"1.0","event_id":"sha256:41f8161ec5bfa30a9f07439636771e8b25b840554fb604a6a972423d3f739f85"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:HZQZFQO34CSJGCLO5FWXJSYMH3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Astrometric and photometric observations of six brightest trans-Neptunian objects at the Kyiv comet station","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alexander Baransky, Oleksandra Lukina, Serhii Borysenko","submitted_at":"2021-07-06T17:28:57Z","abstract_excerpt":"In this work, we focused on observations of six trans-Neptunian objects (TNOs) whose apparent magnitudes are brighter than 20 mag. We present the results of astrometric and photometric observations of (134340) Pluto, (136108) Haumea, (136472) Makemake, (136199) Eris, (90482) Orcus and (20000) Varuna obtained at the Kyiv comet station (Code MPC 585) in 2017-2019. For observations, we used the 0.7-m reflector AZT-8 with the FLI PL4710 CCD camera and filters of the Johnson-Cousins photometric system. From our images, we measured the objects astrometric positions, calculated apparent magnitudes in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.02771","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/2107.02771/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":"2026-07-05T02:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W9spffvWxsgia3sSTn/LPcdu8bdMVgI5o7y+g2xXgHlejhGwvCxUVJyK1skuaDXvCy84k8zy0UtYTIfqb3hQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:08:29.770191Z"},"content_sha256":"777713e68cb695cb59b0569785c33d0c7ac58972f7e9e9804213e34c3e4e3fb5","schema_version":"1.0","event_id":"sha256:777713e68cb695cb59b0569785c33d0c7ac58972f7e9e9804213e34c3e4e3fb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/bundle.json","state_url":"https://pith.science/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/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":"2026-07-06T18:08:29Z","links":{"resolver":"https://pith.science/pith/HZQZFQO34CSJGCLO5FWXJSYMH3","bundle":"https://pith.science/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/bundle.json","state":"https://pith.science/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HZQZFQO34CSJGCLO5FWXJSYMH3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HZQZFQO34CSJGCLO5FWXJSYMH3","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":"8f2d59aed23ae27214c21892d2ece75f6b0685070f9f0479dbabe5ec5fe6c2d3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-07-06T17:28:57Z","title_canon_sha256":"b360e802c41f97aa3bfa0fbbc49f03acc4c65b742bfa559f3e51fb9af15ff1a3"},"schema_version":"1.0","source":{"id":"2107.02771","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.02771","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2107.02771v1","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.02771","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"HZQZFQO34CSJ","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"HZQZFQO34CSJGCLO","created_at":"2026-07-05T02:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"HZQZFQO3","created_at":"2026-07-05T02:55:23Z"}],"graph_snapshots":[{"event_id":"sha256:777713e68cb695cb59b0569785c33d0c7ac58972f7e9e9804213e34c3e4e3fb5","target":"graph","created_at":"2026-07-05T02:55:23Z","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/2107.02771/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work, we focused on observations of six trans-Neptunian objects (TNOs) whose apparent magnitudes are brighter than 20 mag. We present the results of astrometric and photometric observations of (134340) Pluto, (136108) Haumea, (136472) Makemake, (136199) Eris, (90482) Orcus and (20000) Varuna obtained at the Kyiv comet station (Code MPC 585) in 2017-2019. For observations, we used the 0.7-m reflector AZT-8 with the FLI PL4710 CCD camera and filters of the Johnson-Cousins photometric system. From our images, we measured the objects astrometric positions, calculated apparent magnitudes in","authors_text":"Alexander Baransky, Oleksandra Lukina, Serhii Borysenko","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-07-06T17:28:57Z","title":"Astrometric and photometric observations of six brightest trans-Neptunian objects at the Kyiv comet station"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.02771","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":"sha256:41f8161ec5bfa30a9f07439636771e8b25b840554fb604a6a972423d3f739f85","target":"record","created_at":"2026-07-05T02:55:23Z","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":"8f2d59aed23ae27214c21892d2ece75f6b0685070f9f0479dbabe5ec5fe6c2d3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-07-06T17:28:57Z","title_canon_sha256":"b360e802c41f97aa3bfa0fbbc49f03acc4c65b742bfa559f3e51fb9af15ff1a3"},"schema_version":"1.0","source":{"id":"2107.02771","kind":"arxiv","version":1}},"canonical_sha256":"3e6192c1dbe0a493096ee96d74cb0c3ee5394e92bc4a3c44b47ee35284fa80e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e6192c1dbe0a493096ee96d74cb0c3ee5394e92bc4a3c44b47ee35284fa80e4","first_computed_at":"2026-07-05T02:55:23.887191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:55:23.887191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KA1nEeYN78RTlwMF0zbtYH7W1muHGigkKXLVgiJbB0wmg28dFM5EqSHrXA0iT/YuC7Zl2qwEj64m6TxvMLv3AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:55:23.887699Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.02771","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41f8161ec5bfa30a9f07439636771e8b25b840554fb604a6a972423d3f739f85","sha256:777713e68cb695cb59b0569785c33d0c7ac58972f7e9e9804213e34c3e4e3fb5"],"state_sha256":"fdc49f4a5e348f8a7d1aed09f794090bcff65960c856383390d63ebb3b42fad2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sknz/BKxsBRIJO2DuJvrAOWpmzsvxp03y98rpKy0gQhWkG3xwXmDV4ylLnk14/5CqaOFC0xtTDGn+GehBhvdAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T18:08:29.772142Z","bundle_sha256":"9435dedc752b9970192ea5df8d85b5c50e871a262bd9723c5d8386bf1955ac7d"}}