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The galaxy remains unresolved with the HST/ACS, which implies its distance of {$D > 13.1$ Mpc} and linear effective diameter of $A_e >3.0$ kpc. We notice that KDG 218 is most likely associated with a galaxy group around the massive lenticular NGC 4958 galaxy at approximately $22$ Mpc, or with the Virgo Southern Extension filament at approximately $16.5$"},"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":"1711.06074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-16T13:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"ed1e47c5431123899de616e43917d1035766b86fbf6cd7ed75205ba50e042388","abstract_canon_sha256":"574fef1b526dcb302952db728481356547c2fcaa758fcc83c56a3207d24f785a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:10.275882Z","signature_b64":"MZPucR8cQqGpbor9kutvwOGRaKgxyqcr2cxTzMmzPpN23NYXCLdejPOw+qYMDzwZWOAt7PSDa2I/QPqhYy3LBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5945012c844aca3d9818fad98c150b005c2b629ad960eec9c0b010eb96168dfb","last_reissued_at":"2026-05-18T00:28:10.275136Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:10.275136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"KDG 218, a Nearby Ultra-Diffuse Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"I. D. Karachentsev, L. N. Makarova, M. E. Sharina, V. E. Karachentseva","submitted_at":"2017-11-16T13:14:12Z","abstract_excerpt":"We present properties of the low-surface-brightness galaxy KDG 218 observed with the HST/ACS. The galaxy has a half-light (effective) diameter of $a_e =47^{\\prime\\prime}$ and a central surface brightness of $SB_V(0) = 24.4^m/sq^{\\prime\\prime}$. The galaxy remains unresolved with the HST/ACS, which implies its distance of {$D > 13.1$ Mpc} and linear effective diameter of $A_e >3.0$ kpc. 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