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The luminosity decline rate, Delta(m_{15}(B)) = 1.04 +/- 0.04 mag indicates an absolute B magnitude at maximum of M_B = -19.34 +/- 0.3 mag and the distance modulus to the parent galaxy as mu=32.89 +/- 0.4.The light curve shapes are similar, though not identical, to those of SNe 1998bu and 1990N, both of which had luminosity decl"},"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":"astro-ph/0409494","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-21T08:29:13Z","cross_cats_sorted":[],"title_canon_sha256":"34466d18e7c0de030614d524fcfad45e484f17ed9a210dbe4e42d014d98e1e16","abstract_canon_sha256":"51a3c7c1320dad677291bf36bdbf9f349705815fc8db9e2941a814464c773a93"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:44:43.782926Z","signature_b64":"l+Uq2tjmeQbSjRJDHxhf2ijxGEvrEa3zvKf2Xrw52qk8f73iDvP5juPqMgNHPtdBU4Fm3oadWvipkQnUAIFdAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d117974cbb3d482e3718e9e07e9f6822dfd87a9d1d6cbdc69315d889548c889b","last_reissued_at":"2026-07-04T16:44:43.782485Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:44:43.782485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Type Ia supernova SN 2003du: optical observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D.K. 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