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We obtain a motion of $\\mu_{\\alpha}\\,\\cos(\\delta) = -0.37\\pm0.57$ mas yr$^{-1}$ and $\\mu_{\\delta} =-3.39\\pm0.58$ mas yr$^{-1}$. Combining this with the known line-of-sight velocity, this corresponds to a Galactocentric V$_\\mathrm{rad}=84\\pm9$ and V$_\\mathrm{tan}=164^{+66}_{-55}$ km s$^{-1}$. Applying Milky Way halo masses between 0.8 to 1.6$\\times 10^{12}$ M$_\\odot$ results in an apocenter at 33.9$"},"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":"1711.09097","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-24T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"897edfc2bff859a64f1ca321ae5f62ef6b20239b363759cf00e40465a4cf77ae","abstract_canon_sha256":"1c1ad1c9a2916e5dc5da164283a49ae353b0e2e3a3f86eefd37d6f1573e5c5d4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:06.748397Z","signature_b64":"opWOpCR/1cS0dEVUdwox0gLp5gGk8NLU+nS7zfulU+VODm1IAG6aPR3otRz4OW8+eJPFWXY7AxeJTwstqQn3Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a193caa09fe4d0a4ee83f52b6d6b4cafbdb8cda3fa50bff05cc32a4b8038eeb9","last_reissued_at":"2026-05-18T00:11:06.747740Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:06.747740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Orbit and Origin of the Ultra-faint Dwarf Galaxy Segue 1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Wetzel, E. J. Tollerud, M. Lokken, N. Kallivayalil, P. Zivick, S. T. Linden, T. K. Fritz","submitted_at":"2017-11-24T19:00:01Z","abstract_excerpt":"We present the first proper motion measurement for an ultra-faint dwarf spheroidal galaxy, Segue 1, using SDSS and LBC data as the first and second epochs separated by a baseline of $\\sim 10$ years. We obtain a motion of $\\mu_{\\alpha}\\,\\cos(\\delta) = -0.37\\pm0.57$ mas yr$^{-1}$ and $\\mu_{\\delta} =-3.39\\pm0.58$ mas yr$^{-1}$. Combining this with the known line-of-sight velocity, this corresponds to a Galactocentric V$_\\mathrm{rad}=84\\pm9$ and V$_\\mathrm{tan}=164^{+66}_{-55}$ km s$^{-1}$. 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