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NGC 6946 ha sido incluida en el [[Atlas de galaxias peculiares]] de [[Halton C. Arp]] con el número Arp 29, siendo considerada allí ''una galaxia con un brazo espiral bien definido''.
== Objetos del Catálogo Caldwell ==
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<div class="NavHead" style=" margin:0 auto; background:#CEDAF2; padding:3px; border:1px solid #003399; text-align:center" cellspacing="1"; text-align:center"> '''Objetos del [[Catálogo Caldwell]]''' </div>
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| [[NGC 188|C1]] || [[NGC 40|C2]] || [[NGC 4236|C3]] || [[Nebulosa Iris|C4]] || [[IC 342|C5]] || [[NGC 6543|C6]] || [[NGC 2403|C7]] || [[NGC 559|C8]] || [[Sh2-155|C9]] || [[NGC 663|C10]]
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|- style="font-size:0.9em" bgcolor="white"
| [[NGC 7635|C11]] || [[NGC 6946|C12]] || [[NGC 457|C13]] || [[Cúmulo Doble de Perseo|C14]] || [[NGC 6826|C15]] || [[NGC 7243|C16]] || [[NGC 147|C17]] || [[NGC 185|C18]] || [[IC 5146|C19]] || [[NGC 7000|C20]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 4449|C21]] || [[NGC 7662|C22]] || [[NGC 891|C23]] || [[NGC 1275|C24]] || [[NGC 2419|C25]] || [[NGC 4244|C26]] || [[NGC 6888|C27]] || [[NGC 752|C28]] || [[NGC 5005|C29]] || [[NGC 7331|C30]]
|- style="font-size:0.9em" bgcolor="white"
| [[IC 405|C31]] || [[NGC 4631|C32]] || [[Nebulosa del Velo|C33]] || [[Nebulosa del Velo|C34]] || [[NGC 4889|C35]] || [[NGC 4559|C36]] || [[NGC 6885|C37]] || [[NGC 4565|C38]] || [[NGC 2392|C39]] || [[NGC 3626|C40]]
|- style="font-size:0.9em" bgcolor="white"
| [[Híades (astronomía)|C41]] || [[NGC 7006|C42]] || [[NGC 7814|C43]] || [[NGC 7479|C44]] || [[NGC 5248|C45]] || [[Nebulosa Variable de Hubble|C46]] || [[NGC 6934|C47]] || [[NGC 2775|C48]] || [[NGC 2237|C49]] || [[NGC 2244|C50]]
|- style="font-size:0.9em" bgcolor="white"
| [[IC 1613|C51]] || [[NGC 4697|C52]] || [[NGC 3115|C53]] || [[NGC 2506|C54]] || [[Nebulosa Saturno|C55]] || [[NGC 246|C56]] || [[NGC 6822|C57]] || [[NGC 2360|C58]] || [[NGC 3242|C59]] || [[NGC 4038|C60]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 4039|C61]] || [[NGC 247|C62]] || [[NGC 7293|C63]] || [[NGC 2362|C64]] || [[NGC 253|C65]] || [[NGC 5694|C66]] || [[NGC 1097|C67]] || [[NGC 6729|C68]] || [[NGC 6302|C69]] || [[NGC 300|C70]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 2477|C71]] || [[NGC 55|C72]] || [[NGC 1851|C73]] || [[NGC 3132|C74]] || [[NGC 6124|C75]] || [[NGC 6231|C76]] || [[NGC 5128|C77]] || [[NGC 6541|C78]] || [[NGC 3201|C79]] || [[NGC 5139|C80]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 6352|C81]] || [[NGC 6193|C82]] || [[NGC 4945|C83]] || [[NGC 5286|C84]] || [[IC 2391|C85]] || [[NGC 6397|C86]] || [[NGC 1261|C87]] || [[NGC 5823|C88]] || [[NGC 6087|C89]] || [[NGC 2867|C90]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 3532|C91]] || [[NGC 3372|C92]] || [[NGC 6752|C93]] || [[NGC 4755|C94]] || [[NGC 6025|C95]] || [[NGC 2516|C96]] || [[NGC 3766|C97]] || [[NGC 4609|C98]] || [[Nebulosa Saco de Carbón|C99]] || [[IC 2944|C100]]
|- style="font-size:0.9em" bgcolor="white"
| [[NGC 6744|C101]] || [[Pleiadi del Sud|C102]] || [[NGC 2070|C103]] || [[NGC 362|C104]] || [[NGC 4833|C105]] || [[NGC 104|C106]] || [[NGC 6101|C107]] || [[NGC 4372|C108]] || [[NGC 3195|C109]] ||/
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== Véanse también ==
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