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The aim of this work is to search for rotational variability on the surface composition of the dwarf planet (136472) Makemake Methods. We observed Makemake in April 2008 with the medium-resolution spectrograph ISIS, at the William Herschel Telescope (La Palma, Spain) and obtained a set of spectra in the 0.28 - 0.52 {\\mu}m and 0.70 - 0.95 {\\mu}m r"},"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":"1504.02350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-04-09T15:25:59Z","cross_cats_sorted":[],"title_canon_sha256":"ea649a4642b676aec9e941b43c7f8cec5c9d6a5e0c0c370297f45c43ad8dab3c","abstract_canon_sha256":"b31ce0f57bd93efb59ad19c0583785218a056beaf4ccc474b14958779586c4dc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:16.441498Z","signature_b64":"ad4u1HrGxWE8vywRav+AubmQ+ujW0QMEVOIBfYDdBLzg1O9WKB493OHTHU9NFqwERBbk7q1y85ADrsS/dMbWDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b568f78ede7a3495c3e3f4c1e685e8526895d629cd2ac5f32e9130808d821277","last_reissued_at":"2026-05-18T02:14:16.440914Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:16.440914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Rotationally resolved spectroscopy of dwarf planet (136472) Makemake","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"J. 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